Hi,
We make a great app for practicing playing or singing along with audio, with simple repeat and set list controls.
We had some help from AppleVis members in the past improving our VoiceOver support, and we have a bunch of free promo codes to give away to say thank you, and these are only valid for 3 days so get them quick if you need a great repeating music player to help you learn things.
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We put a lot of effort into the VoiceOver UI which I'm sure can still be improved, but we think it's pretty good.
If you like it please rate or review us in the App Store, it really helps a small developer like us.