Solo/soli in AP Music Theory

Solo/soli is a texture device in AP Music Theory (Topic 2.12) where one performer (solo) or a small group of like performers (soli) is featured prominently, set apart from the rest of the ensemble; it is the opposite of tutti, where everyone plays together.

Verified for the 2027 AP Music Theory examLast updated June 2026

What is solo/soli?

Solo/soli is one of the texture devices listed in the AP Music Theory CED under Topic 2.12. A solo features a single voice or instrument standing out from everything else, like a trumpet line rising over soft strings. Soli is the plural form, used when a small group (say, the whole sax section) is featured together as a unit while the rest of the ensemble drops back or drops out.

Here's the key idea for AP purposes. Solo/soli isn't a texture type like monophony or homophony. It's a device, a label that describes what's happening inside a texture. A solo melody with chordal backing is still homophonic texture overall; "solo" just tells you that one voice is the star. When you describe a passage on the exam, texture type answers "how many layers and how do they relate," while devices like solo/soli, doubling, ostinato, and tutti add the specifics.

Why solo/soli matters in AP® Music Theory

Solo/soli lives in Unit 2 (Music Fundamentals II: Minor Scales and Key Signatures, Melody, Timbre, and Texture), specifically Topic 2.12, Texture Devices. It supports learning objective 2.12.A: identify texture devices in performed music and notated music. That phrase "performed music" matters. AP Music Theory is heavy on aural skills, so you have to recognize a solo or soli passage by ear, not just spot the word "Solo" printed in a score. The CED groups solo/soli with accompaniment, doubling, ostinato, and tutti as terms that "further describe the unique texture of a musical passage," so think of it as part of your texture-description vocabulary, the words you reach for after you've named the basic texture type.

Keep studying AP® Music Theory Unit 2

How solo/soli connects across the course

Tutti (Unit 2)

Tutti means the full ensemble plays together, so it's the direct opposite of solo/soli. Composers alternate the two constantly, and recognizing that back-and-forth (featured voice, then everyone, then featured voice again) is exactly the kind of texture identification 2.12.A asks for.

Accompaniment (Unit 2)

A solo almost never exists in a vacuum. The other parts usually shift into a supporting role, which is the accompaniment device. Hearing a passage as "solo plus accompaniment" is a complete texture description, and it's how a lot of homophonic music actually works.

Ostinato (Unit 2)

An ostinato is a repeated pattern, often in the bass or accompaniment, that can run underneath a solo line. The two devices stack: the ostinato gives the music a steady floor while the solo voice gets the spotlight on top. Texture devices aren't either/or; one passage can use several at once.

Timbre (Unit 2)

Identifying a solo by ear usually means identifying which instrument is featured, and that's a timbre skill. Unit 2 pairs timbre and texture for a reason: when an oboe solo emerges from a string texture, you're hearing tone color and texture change at the same time.

Is solo/soli on the AP® Music Theory exam?

Solo/soli shows up in the multiple-choice section, especially aural questions where you listen to an excerpt and pick the best description of its texture. A stem might play a passage and ask which texture device is present, with solo/soli, tutti, ostinato, and doubling as the answer choices. In notated-music questions, watch for a single prominent melodic line while other parts rest or thin out, or for the actual markings "Solo" and "Soli" in a score. No released FRQ requires the term verbatim, but the skill behind it (describing what's happening in a musical texture, by ear and by eye) is exactly what 2.12.A tests. Your job is simple: hear or see one featured voice, say solo; hear or see a featured small group, say soli; hear everyone together, say tutti.

Solo/soli vs Tutti

Solo/soli and tutti are opposite ends of the same spectrum. Solo features one performer and soli features a small featured group, while tutti (Italian for "all") means the entire ensemble plays together. They're easy to mix up because they often appear in the same piece, trading off. The quick test: ask "who's playing right now?" If it's one standout voice or section, it's solo/soli. If it's everybody, it's tutti.

Key things to remember about solo/soli

  • Solo means one performer is featured prominently, and soli means a small group of like performers is featured together, both standing apart from the full ensemble.

  • Solo/soli is a texture device, not a texture type, so a passage can be homophonic overall while also featuring a solo line.

  • Learning objective 2.12.A requires you to identify solo/soli in both performed (heard) music and notated (written) music.

  • Tutti is the opposite of solo/soli, and pieces often alternate between featured passages and full-ensemble passages.

  • Texture devices stack, so a single passage can have a solo melody over an ostinato accompaniment, and a full description names all of them.

  • In a score, the words "Solo" or "Soli" printed above a part are explicit markings telling that performer or section they're the featured voice.

Frequently asked questions about solo/soli

What is solo/soli in AP Music Theory?

Solo/soli is a texture device from Topic 2.12 where one performer (solo) or a small featured group (soli) stands out prominently from the rest of the ensemble. It's one of the descriptive terms, along with tutti, doubling, ostinato, and accompaniment, that you use to describe a passage's texture.

Is solo a texture type like monophony or homophony?

No. Solo/soli is a texture device, an extra label you add on top of the texture type. A solo melody with chordal backing is still homophonic texture; "solo" just identifies the featured voice within it.

What's the difference between solo/soli and tutti?

They're opposites. Solo/soli means one performer or a small group is featured while the rest of the ensemble pulls back, and tutti (Italian for "all") means the entire ensemble plays together. Music often alternates between the two.

What's the difference between solo and soli?

Solo is singular and soli is plural. Solo features one performer (a single clarinet line over the band), while soli features a small group performing as a featured unit (the whole trumpet section playing the melody together).

Do I need to identify solo/soli by ear on the AP Music Theory exam?

Yes. Learning objective 2.12.A says you identify texture devices in performed music as well as notated music, so expect aural multiple-choice questions where you hear an excerpt and recognize that one voice or a small group is being featured.