wo99 and Accompaniment Cool are pretty good. WO99 is not as good as Accompaniment Cool, but Accompaniment Cool requires virtual currency, so you just rely on posting to earn points. You can register for both. If you download WO99 If you get it, you don’t need to go to Accompanying Cool. If you can’t download WO99, go to Accompanying Cool. If you don’t have Accompanying Cool, it’s really hard to find it in the world. The English accompaniment of Accompanying Cool is updated very quickly...I personally like it~ WO99 is great for uploading your own cover songs