Cover re-renders an existing song in a new style while keeping its structure recognizable. Pick any audio asset as the source, describe the target sound (genre, instruments, vocal character, production), and set Cover strength: high values stay faithful to the arrangement, 0.5 to 0.6 transforms the genre while the hook survives, 0.2 only borrows the mood. Add an optional reference track to guide the feel without locking to its structure, pass lyrics to keep or rewrite the words, or toggle Instrumental for a vocal-free rework.