Disclaimer: There is another project by the same name, it is a resourcepack which does not work for ActualMusic or Ambience. ActualMusic is like Ambience, but without bugs.
For ActualMusic 2.0 and above
Here you go, FatRat.
TheFatRat - Dancing Naked
https://open.spotify.com/track/21s6cVAXnD0PURkrfjx84x
TheFatRat - Fly Away feat. Anjulie
https://open.spotify.com/track/1DfFHyrenAJbqsLcpRiOD9
TheFatRat - Prelude
https://open.spotify.com/track/7z38jpGjzGk2rkkb9kuPeB
TheFatRat - Epic
https://open.spotify.com/track/4C8YLKqWA4i4sMmJ1kOJi4
TheFatRat - Elegy
https://open.spotify.com/track/5WSqffpoSAUiE1g7jZCH7F
TheFatRat - No No No
https://open.spotify.com/track/5mZB7pYtcAPo7wo5DtW939
TheFatRat - Unity
https://open.spotify.com/track/47qYqGPgMTh3l1PRKBHEfI
TheFatRat - Time Lapse
https://open.spotify.com/track/3v8aPisqoGRZEwwf2rCeXQ
TheFatRat - Prelude VIP
https://open.spotify.com/track/1DxzEA74pW0PbNKqFCMzXe
TheFatRat - Monody (feat. Laura Brehm)
https://open.spotify.com/track/3VvBPkc24zC7x05mgJTyGO
TheFatRat - The Calling (feat. Laura Brehm)
https://open.spotify.com/track/2k1bFfcPIRTMeCGO48F0OE
TheFatRat - Jackpot
https://open.spotify.com/track/3TkX3Xpb4wNNv8226fupx0
TheFatRat - Infinite Power
https://www.youtube.com/watch?v=3aLyiI2odhU
For any avid FatRat fans, yes I know Xenogenesis, Windfall and Telescope are missing, they aren't on The Arcadium so I assumed I'm not allowed to use them.