Suno is the strongest fit here, as it generates original AI music tracks from text prompts, letting you describe the mood, tempo, and style you want for a brand video or commercial and receive a complete song in seconds. You can iterate quickly across different vibes until you land on something that matches your brand identity, and the Pro plan at $10/mo keeps costs low for a production team. ElevenLabs is worth considering if you also need voiceover or sound design layered into your audio workflow. Descript fits better when you need to edit and mix the generated tracks alongside video timelines in one tool.