Well most pirated music albums and songs are still in mp3s. Even bandcamp I chose mp3s for itune, maybe it's bias confirmation, but I don't believe mp3 went out

Well most pirated music albums and songs are still in mp3s. Even bandcamp I chose mp3s for itune, maybe it's bias confirmation, but I don't believe mp3 went out of style. Do you have a source for this? Is this audio compression for music production people or in general? I just can't see mp3 being out.