How to Comp

The bottom line

Most of us spend maybe fifteen percent of a gig soloing. The rest of the night we’re comping — and almost nobody ever teaches us how. Hal Crook’s How to Comp is, thirty years after Advance Music published it, still the only book I know that treats accompaniment as a discipline in its own right, with its own theory, its own vocabulary, and its own practice routines. Crook calls comping “a kind of secondary soloing,” and the book takes that idea completely seriously: ten sections that move from building a single two-note voicing all the way to strolling — laying out entirely — behind a soloist.

It’s not a fun read — it reads like a Berklee course pack, because that’s essentially what it is. But every time I return to it, something in my trio playing gets noticeably better within a week. Few method books can claim that.

Who it’s for — and who should skip it

Crook states it plainly in the preface: the book is “primarily for intermediate through advanced level players of harmonic instruments, e.g. piano (keyboards), guitar and vibraphone.” That’s accurate. You need a working knowledge of chord scales, tensions, and chord symbols before page 14 makes sense — Crook explicitly points readers to his own How to Improvise for background, and I’d add Levine’s The Jazz Theory Book as the reference to keep within reach.

He also claims the second half (Sections VI through X) benefits bassists, drummers, and horn players, and I agree — the interaction and pacing chapters are instrument-agnostic.

Skip it if:

• You’re a beginner. There is zero hand-holding here. Start with Siskind’s Jazz Piano Fundamentals, which teaches basic comping rhythms and voicings with far more patience.
• You want a grab-bag of voicings to memorize. Crook teaches you to construct and evaluate voicings, not to copy them. If you want plug-and-play shapes, Levine’s The Jazz Piano Book serves that need better.
• You won’t practice with play-alongs or other people. Most exercises here require a musical context — recorded or live. Reading the book without doing them accomplishes very little.
• You mainly play solo piano. The whole premise assumes a rhythm section and a soloist to support.

What’s inside

The book is organized into ten sections, each broken into short chapters that end with exercises and, crucially, suggested daily practice schedules printed in the margin.

Section I: Harmony is the longest. Chapter 1 (“Preparing to Build Voicings”) covers chord tones vs. tensions, low interval limits, register analysis, and a consonance/dissonance analysis method where you measure every interval inside a voicing to control its level of “blandness” or “richness.” Chapter 2 (“Building Voicings”) then walks through 2-note up to 6-note comping voicings using a seven-step construction process: pick the chord scale, pick the lead note, pick the register, then systematically add available tones beneath and analyze what you built. Chapter 3 covers stock voicings and constant-structure practice.

Section II: Melody treats the top note of your voicings as a melodic line — voiceleading, common tones, melodic leaping, and “independent lead lines” that move against the changes.

Section III: Rhythm is where the book becomes special. The chapter on Forward Motion defines why some comping swings and some doesn’t: upbeat attacks sustained over the beat line or followed by a rest create propulsion, while consistent downbeat attacks — especially on beats one and three — kill it. The Basic Rhythmic Interaction chapter explains the division of labor with the bass: the bassist supplies the steady downbeats, so the harmonic instrument should contrast with upbeats rather than duplicate the bass’s role. Chapter 3 has you build a “rhythm vocabulary” of one- and two-measure motifs, each notated in short and sustained versions — the rhythmic equivalent of learning licks.

Sections IV and V cover harmonic, melodic, and rhythmic embellishment (contracting and expanding chord durations) and non-harmonic voicings — deliberately “wrong” major triads and interval structures for color and tension.

Sections VI through VIII are the heart of the book for me: dividing and shifting attention between yourself and the band; interacting with the other accompanists (tempo, song form, harmonic rhythm, dynamics, developing ideas across 16–32 bar spans, pacing/strolling); and finally interacting with the primary soloist — reading their signals, supportive vs. interactive comping, and the dangers of following “like white on rice,” as Crook puts it.

Section IX covers single-note-line comping, and Section X closes with three full comping transcriptions — on the changes to “All the Things You Are,” “Easy to Love,” and “Stella by Starlight” — from Crook’s Creative Comping for Improvisation play-alongs, recorded on the included CD with overdubbed trombone solos by Crook himself.

Strengths

It systematizes the unsystematizable. Interaction, pacing, listening — these are things you’re supposed to “just absorb” on the bandstand. Crook actually breaks them into practicable units. His core principle, stated in the Practicing Rhythm chapter, is “restrict one area to develop growth in another”: freeze the voicing to a single fixed structure and improvise only rhythm; freeze the rhythm and work only voiceleading. That single idea has reshaped how I practice — and how I teach.

The interaction material is unmatched. Section VIII contains what Crook calls the fundamental rule of comping: “Accompany the soloist as (s)he prefers, not as you prefer. Comp first for the soloist, then for yourself.” He follows it with a checklist of questions — Is what I am playing musical? Is it necessary? Will it enhance this solo? — that I would happily tattoo on certain pianists’ forearms, starting with my own.

The pacing/strolling chapter is pure gold. Crook maps out eight instrumental combinations available within a standard quartet just by having players rest — bass alone, no accompaniment at all — and treats resting as an active musical choice rather than absence.

The practice schedules make it actionable. Nearly every chapter ends with a margin-boxed daily routine — e.g., the Developing Ideas schedule: five specific band exercises, 10–20 minutes each. You always know what to do tomorrow morning.

Weaknesses

The prose is bone-dry. Crook writes like the Berklee professor he was: dense, precise, and utterly without charm apart from the occasional joke (“May the cries you hear on the bandstand to ‘STROLL!’ be far and few between”). Expect to read paragraphs twice.

It outsources the actual material to you. The exercises mostly say: now write and analyze your own voicings following the seven steps; now build your own rhythm motifs. That’s pedagogically right — you learn construction, not shapes — but if you lack self-discipline, you’ll stall by Section I, Chapter 2.

It leans on How to Improvise. Crook says outright that he avoids repeating background material and refers you to the other book. It mostly stands alone, but several practice concepts land harder if you know its big brother.

The production shows its age. The CD examples are played on “an acoustic MIDI grand piano,” and they sound exactly like 1995 MIDI piano. The rhythmic slash notation with diamond noteheads takes some decoding at first.

Style coverage is implicitly straight-ahead. The principles — forward motion, interaction, pacing — transfer to any style, but there’s nothing here about bossa comping patterns, montunos, or funk. Latin players get the concepts, not the idiom.

Guitarists and vibes players adapt on their own. Crook acknowledges the voicings are piano-centric and tells you to delete or transpose notes as needed — fair, but it’s real extra work.

How to actually practice with this book

Don’t read it cover to cover. Here’s what has worked for me and my students:

1. Weeks 1–4: Section I, one voicing size at a time. Write out the seven-step constructions by hand for two or three chord qualities per week. Play each voicing with the root in the bass to judge the sound, as Crook instructs.
2. Weeks 5–8: Section III with a play-along. Pick ONE fixed voicing and improvise rhythm only over a medium-swing track, aiming for upbeat-heavy phrases. The highest-value drill in the book.
3. Ongoing: rhythm vocabulary. Learn two of Crook’s one-measure motifs per week in short and sustained versions, and force them into your next gig.
4. With a band: Sections VII–VIII exercises. The developing-ideas and strolling exercises need live humans. Bring them to a rehearsal — they double as fantastic ensemble workshops.
5. Section X by ear. Play the CD transcriptions, but try lifting phrases from the recording before reading them. Radley’s The Real Easy Ear Training Book pairs well if hearing voicing quality is your bottleneck.

And a mindset note: this book tells you what to practice with rare precision, but staying relaxed and reactive while applying it on the stand is a different skill — Werner’s Effortless Mastery is the companion for that side of the equation.

How it compares

• vs. The Jazz Piano Book (Levine): Levine gives you voicings to play; Crook teaches you why they work and, more importantly, when and whether to play them. Levine barely touches interaction. They complement each other perfectly.
• vs. The Jazz Theory Book (Levine): Levine is the reference for the chord-scale knowledge Crook assumes on page one. Read Levine first, or alongside.
• vs. The Serious Jazz Practice Book (Finnerty): Same DNA — a systematic, self-generating practice method rather than a collection of material. Finnerty does it for single-note technique; Crook does it for accompaniment.
• vs. Jazz Piano Fundamentals (Siskind): Siskind is the on-ramp; Crook is the graduate seminar. If Crook’s Section I feels opaque, spend a year with Siskind first.

Rating breakdown

Category	Score	Why
Clarity	4/5	Rigorously organized with a clean example-numbering system, but the prose is dense and the slash notation needs decoding.
Depth	5/5	No other book goes remotely this deep on comping — from interval analysis of voicings to the psychology of soloist interaction.
Practicality	4.5/5	Margin practice schedules and the restrict-one-area principle are immediately usable; docked half a point because many exercises require a band.
Value	4.5/5	A lifetime of practice material for the price of one lesson — if you have the discipline to generate the material yourself.
Overall	4.5/5	The definitive study of jazz accompaniment, held back only by its dry delivery and steep prerequisites.