Sega's Sonic CD was one of those games that had a reputation for being fun, but hardly anyone played when it was first released thanks to the high entry cost of buying all of the hardware needed to play it: a Sega Genesis, Sega CD, and the game itself.  Since the game turned up again for modern hardware as a downloadable title in 2011, however, it's legacy has become well earned.  Lots of people have had the opportunity to enjoy Sonic CD, particularly its two unique soundtracks.  Now OverClocked ReMix has turned to Sonic the Hedgehog's journey to Little Planet for its latest album release.  Available as a free download, Temporal Duality offers four discs of musical action.  Here's the descriptive blurb:

Temporal Duality is the 45th album published by OverClocked ReMix and arranges music from Sonic CD, released in 1993 for the Sega CD. It features 38 tracks arranged by 39 artists that cover both the JP/EU and US soundtracks, originally composed by Masafumi Ogata, Naofumi Hataya, Spencer Nilsen, David Young, and Sterling Crew. Sonic CD was unique from other Sonic games of the era due to its time travel system that allowed players to experience 4 variations of each stage. The game featured different soundtracks for the JP/EU and the US releases, which were both ahead of its time for video games, being among the first to have Red Book CD Audio. Spanning 3 discs and numerous genres, Temporal Duality is the fourth OverClocked ReMix album to pay tribute to the 16-bit era of the Sonic The Hedgehog series!

I've spent the past few days listening to the album and I like what I hear.  There's plenty to like here, although my favorite track has to be the instrumental version of "Time Traveller's Delight" which is a remix of the Japanese version of the Stardust Speedway theme.  I've always liked the original theme, so of course I'm going to enjoy the remix, but I especially like the use of some of the cues from the Sonic Generations remix of the song.  There's layers upon layers here, people.  Deep stuff.