Regenerate a song while keeping the same melody

Description: Allow a generated song to be regenerated while preserving the melody, so only the part that needs correcting changes. At the moment, every regeneration produces an entirely new performance. If a song comes out well but has one problem, such as an abrupt ending, a mispronounced word, or a section that didn’t sing properly, the only option is to generate again and accept a completely different melody. Users report running 20 or more attempts trying to land a version that’s both correct and musically right. What users are asking for: Lock the melody of an existing generation Regenerate only the problem section, or the whole song with the same melody Keep the musical result consistent across attempts while fixing specific faults This matters most for users working on complete projects or albums, where a particular melody is part of the finished piece and losing it means starting over rather than repairing. Related to existing requests around editing generated songs, but distinct: this is about preserving what already works rather than editing lyrics.