How to write lyrics for AI songs that actually get sung

An AI music generator reads two things: how the song should sound, and the words to sing. Most bad AI songs come from mixing the two up, or from giving the engine more words than the song has room for. This guide covers the three rules that fix nearly everything, with examples you can paste into eroq's music studio in Custom mode.

Rule 1: style is the sound, lyrics are only the words

On Music One, Custom mode has two fields, and the engine treats them differently.

• Style is how it sounds. A short comma list works best, with the sung language first: English, warm female vocal, synth-pop, 104 BPM, shimmering synths, melancholy.
• Lyrics are only what gets sung.

Everything in the lyrics gets sung, instructions included. Write "(slow down here, add strings)" in the lyrics and you may hear someone sing it. Put tempo, instruments, mood and vocal character in Style; put only words for a voice in Lyrics.

Two style habits that help:

• Describe a sound, not a person. Genre, era, vocal character and instruments ("1990s trip-hop, smoky female vocal, vinyl crackle, slow breakbeat") get you further than an artist's name: they are the words Music One follows, and the songwriter never names an artist.
• Say the language first if it is not English, and write the lyrics in that language: Spanish, warm male vocal, bolero, nylon guitar. English is the strongest.

Rule 2: shape the song with section tags

Section tags are markers on their own lines that tell the engine where each part begins. Music One knows six, in song order: [Intro], [Verse], [Pre-Chorus], [Chorus], [Bridge], [Outro].

[Verse]
Streetlights fade behind the bus
The town I knew is shrinking fast
Every window that I passed
Held a version of my past

[Chorus]
I'm leaving, leaving, nothing left to prove
The road is long and I'm in love with the move

[Verse]
Mama's porch light, still on late
She said the city eats its young
I said I'd write, I held my tongue
And let the engine take the weight

[Chorus]
I'm leaving, leaving, nothing left to prove
The road is long and I'm in love with the move

[Bridge]
And if I fall, I'll fall in motion
Never standing still again

[Outro]
Nothing left to prove

What the tags do for you:

• A chorus that comes back is what makes a song stick. Write it once, then repeat it word for word after the next verse. Repetition is the hook.
• A bridge changes the mood. Use it for the one line that turns the story around, and keep it short.
• An outro lands the ending. Without one, a song can stop where it runs out of time rather than where it means to.
• An untagged wall of text is treated as one verse, so it sings as one shapeless block. Tag it.

Rule 3: fit the words to the length

The single most common problem: the song ends before your last line. The engine has a fixed length to fill, intros and instrumental breaks take some of it, and the rest is sung.

The working budget is about one sung line every four to five seconds:

Length	Sung lines that fit, roughly
30 seconds	6–7
1 minute	12–14
2 minutes	25–28
3 minutes	38–42
4 minutes	50–55

The studio counts for you: under the lyrics, a counter shows your sung lines against the budget for the length you picked, and warns when there are too many. Tags and blank lines do not count; only sung lines do.

If you are over budget, either pick a longer length or cut a verse. Do not cram: long lines sung fast sound rushed.

Writing lines that sing well

• Short lines, natural stress. Eight to ten syllables sings comfortably. Read it aloud on a beat.
• Rhyme loosely. Near-rhymes ("fast" / "past", "young" / "tongue") sound more human than forced perfect ones.
• Concrete images beat abstractions. "Mama's porch light, still on late" sings better than "I feel nostalgic".
• Swear if the song needs it. Lyrics are uncensored within the written policy, so profanity, heartbreak and dark storytelling are fine. The policy refuses anything involving minors, real identifiable people without consent, anything illegal and sexual violence.

Don't want to write? Let the songwriter start

• Simple mode: describe the song in one sentence and the studio writes lyrics, style and a title for you, sized to the length you picked, included in the price.
• Custom mode, empty lyrics: press Surprise me to get a free draft for your style, then edit it.
• Enhance, the same button once the lyrics are written, polishes them; it needs a paid plan.

Then pick the length, one or two takes, and Generate. A take costs 3 credits per started 30 seconds: 12 credits for the two-minute song above. If one line comes out wrong, open the song under Your songs and press Remix in Custom: it reopens with the same style, lyrics and length, so you change the word and render again.

FAQ

How many lines of lyrics does an AI song need?

About one sung line every four to five seconds: 12–14 lines for a one-minute song, 25–28 for two minutes, 38–42 for three. The studio's counter shows your total against the budget for the length you chose.

Why does my AI song stop before the last lyrics?

Too many lines for the length. Pick a longer length or cut a verse until the counter is within budget.

Where do I put the genre and the instruments?

In Style, never in Lyrics. Everything in the lyrics gets sung, instructions included.

Which section tags does Music One understand?

[Intro], [Verse], [Pre-Chorus], [Chorus], [Bridge] and [Outro], each on its own line.

Can I use a singer's name to get their sound?

Describe the sound instead: genre, era, vocal character, tempo and instruments are what Music One follows, not a singer's name.

Can AI song lyrics include swearing?

Yes, on eroq. Lyrics are uncensored within the written policy: fiction only, nothing involving minors, no real identifiable people without consent, nothing illegal, no sexual violence.