You can create a cover from supported source audio and a selected voice.
Open MyTunes and choose the Cover option.
Select or upload supported source audio.
Choose an available voice.
Review the input and the displayed credit or subscription requirement.
Start the generation and wait for processing to finish.
Open the completed cover in your Library.
Use only audio that you own or have permission to use. Available source formats, voices, duration limits, and access requirements may vary.