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AI Engineering/Phase 06/Lesson 09

Music Generation — MusicGen, Stable Audio, Suno, and the Licensing Earthquake

2026 music generation: Suno v5 and Udio v4 dominate commercial; MusicGen, Stable Audio Open, and ACE-Step lead open-source. The technical problem is mostly solved. The legal problem (Warner Music $500M settlement, UMG settlement) reshaped the field in 2025-2026.

Build 1.3 hr Python

Prerequisites: Phase 6 · 02 (Spectrograms), Phase 4 · 10 (Diffusion Models)

#The Problem

Text → a 30-second to 4-minute music clip, with lyrics, vocals, and structure. Three sub-problems:

  1. Instrumental generation. Text like "lo-fi hip-hop drums with warm keys" → audio. MusicGen, Stable Audio, AudioLDM.
  2. Song generation (with vocals + lyrics). "Country song about rainy Texas nights" → full song. Suno, Udio, YuE, ACE-Step.
  3. Conditional / controllable. Extend an existing clip, regenerate a bridge, swap genre, stem-separate, or inpaint. Udio's inpainting + stem separation is the 2026 feature to match.
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The text and code of this lesson are based on AI Engineering from Scratch by Rohit Ghumare, MIT licensed.