I'm creating an HTML5 game. We have high fidelity composed music, in the format of `wavs` and `mp3s`— some `ogg`. Game engine we are using is melon JS.

The `wav` files are generally 3x time size of mp3s, but even loading the mp3s is by far the slowest asset to load on the web game.

I've tried compressing file mp3s at <http://www.mp3smaller.com/>, @ `mp3 Bitrate 32Kbps` which resulted in 89% reduction in file size. This significantly improves load time of the game, but it's as though we lost 89% of the quality. 

Any recommendations for lossless (or close to) compression services/techniques with significant file downsize but little quality loss?

In images, I know we can take a `.png` and save as `.jpg` at lower fidelity, saving about 70-80% in space...but to the eye, it's impossible to tell.