How to Control Song Structure with Section Tags in Suno and Udio

Both Suno and Udio read square-bracket tags inside your lyrics as instructions about structure. They are how you tell the model where the chorus lands, when to drop into a quiet bridge, or where to leave space for an instrumental solo. Learning the common tags is the difference between a track that wanders and one with a real arc, and it works entirely with your own lyrics.

What you need

• A Suno or Udio account in Custom lyric mode
• Your own lyrics, even rough ones
• A few minutes to test how each tag changes the output

Step 1: Learn the core structural tags

The reliable tags across both tools are the ones that map to song parts. Put each tag on its own line, in square brackets, directly above the lyrics it controls.

Step 2: Lay out a full structure in your lyrics

Arrange the tags in the order you want the song to unfold. A classic, dependable shape is intro, verse, chorus, verse, chorus, bridge, chorus, outro. Place your lyric lines under each tag.

[Intro]

[Verse 1]
First-day shoes still squeak against the floor

[Pre-Chorus]
And the bell is just a breath away

[Chorus]
We are loud, we are new, we are nobody's rerun
Lighting up the hallway like a second sun

[Bridge]
(quiet) Maybe scared is just excited in disguise

[Chorus]
We are loud, we are new, we are nobody's rerun

[Outro]

Step 3: Use performance and instrument cues

Beyond structure, you can hint at dynamics and instrumentation with bracketed cues such as [Instrumental], [Guitar solo], [Soft], or [Build up]. These are suggestions rather than guarantees, so treat them as steering rather than precise control, and regenerate if the model ignores one.

Result: a song that follows the exact shape you planned, with verses, a clear chorus, and a contrasting bridge, all driven by tags layered over your own lyrics.