How long should an advertising jingle be?
Most broadcast jingles run 15, 30 or 60 seconds, with 15 and 30 being the most common lengths for radio and TV spots. Lyro Music tracks run 30 seconds to 3 minutes, so a 30-second jingle is the shortest full render; for a 15-second spot, generate at 30 seconds and trim to the hook.
Write the lyric to match the target length rather than writing a full song and cutting it down, since a shortened full song often loses its ending or fades oddly.
Where should the brand name go in the lyrics?
Put the brand name in the first line or the hook, not saved for a final reveal, because AI vocal models sometimes mispronounce or slur unusual words on a first attempt and you want more than one chance to check it sings clearly.
- Repeat the brand name at least twice across a 30-second jingle
- Keep the brand name on a strong beat, not tucked between other words
- If the name is unusual, spell it phonetically in the lyric box, for example "Zynqo" as "Zin-koh"
What tempo and mood suit a jingle?
Jingles borrow from pop conventions: tempo 90 to 130 BPM, most often 100 to 125 BPM, in a major key for an upbeat feel or a minor key for a more serious or premium tone. A four-chord loop (often C major, G major or A minor) keeps the hook simple enough to repeat without getting boring in 15 to 30 seconds.
Pick one clear mood word (cheerful, confident, calm, energetic) rather than stacking several, since mixed moods tend to blur the result.
Should the jingle include a voice or stay instrumental?
Include a voice if the brand name or slogan needs to be sung; stay instrumental if a separate voiceover artist will read the brand name over the top. For sung lyrics, including a brand name, Lyro Music routes the request to Google's Lyria 3 Pro; for an instrumental bed with a locked tempo, it uses ACE-Step 1.5.
State "Instrumental" explicitly in the prompt when no vocal is wanted, since leaving it out can lead to an unwanted vocal being added.
How is a jingle different from a normal song prompt?
A jingle prompt needs a shorter, tighter hook and an immediate brand reference, where a normal song prompt has room for a build-up, a bridge and a longer story. Treat the whole jingle as one repeating chorus rather than verse-chorus-verse.
Because jingles are so short, small changes matter more: swapping one instrument or vocal descriptor has a bigger effect on a 15-second clip than on a 3-minute song.
Lyrics skeleton
Original, for structure
[Verse] Every morning starts the same Grab a cup and say the name [Chorus] Brightway, Brightway, start your day Brightway coffee, feel the way
Common mistakes
- Writing a full verse-chorus-bridge structure for a 15-second spot: fix by writing one short repeating hook only.
- Leaving the brand name out of the sung lyric and hoping a voiceover will be added later: fix by deciding upfront whether the name is sung or spoken and prompting accordingly.
- Using vague genre words like 'commercial music' with no instruments or mood: fix by naming at least 4 descriptors such as drums, bass, lead instrument and voice.
- Stacking contradictory moods such as 'energetic and calm' in one prompt: fix by picking a single dominant mood.
- Assuming the AI will output exactly 15 seconds: fix by generating the shortest available length and trimming to the hook afterwards.