Google released Lyria 3.5, the latest version of its AI music generation model, on July 29, 2026. The update brings more natural-sounding melodies, improved lyrics, and more realistic vocals with clearer pronunciation, according to the company.
Improved Sound Quality and Control
Lyria 3.5 produces melodies that sound more natural than its predecessor, Lyria 3. Google said the new model also delivers better lyrics and more realistic vocals, with clearer pronunciation. Users can now control tempo and track length more precisely than before. Generated tracks can run from 30 seconds to 3 minutes, giving creators more flexibility.
The model is available through Google Flow Music, the company's platform for AI-powered music creation.
Selective Section Painting
A new feature called "Selective Section Painting" lets users edit specific parts of a track without starting over. For example, a short melody can be turned into a full song by painting in new sections. Users can fine-tune the tempo and duration of individual elements such as vocals, drums, bass, and other instruments.
This editing capability marks a shift from earlier versions, which required regenerating entire tracks to make changes.
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Training Data Questions Remain
Google has not disclosed details about the training data used for Lyria 3.5. When asked, the company did not immediately respond to a question about the data. For Lyria 3, Google said it was trained on materials that YouTube and Google had rights to use under partner agreements and applicable law. The company did not provide further specifics about Lyria 3's training data.
The lack of transparency around training data is a recurring issue for AI music models, which have faced legal and ethical scrutiny over copyright concerns.
Background on Lyria Series
Google has been developing AI music models under the Lyria brand for some time. Lyria 3 was the previous version, though Google did not specify its release date. The new version builds on that work with improved sound quality and editing tools.
Google Flow Music serves as the distribution channel for Lyria 3.5, integrating the model into a platform for music creation.