Maybe you heard about TIDAL, the paid music stream service that allows access over 25 million tracks in FLAC (Free Lossless Audio Codec) and ALAC (Apple Lossless) formats.
These formats are uncompressed and their audio is in high resolution.
To give you the idea, TIDAL strem at 1411Kbps while Spotify 320Kbps (Vorbis) and iTunes 256Kbps (AAC).
If you want to hear the quality here is a list of sites where you can download hi-res music for free:
Submit your e-mail and you can download free samples from HDTracks.
Ektoplazm offer electronic music in this format.
Of course you need also a player, here is a good list from the official site of the audio codec.