After Jerome Froese had left Tangerine Dream in 2006 he and Edgar Froese cleared their respective rights on the individual compositions created during their 16 year long musical partnership. While Edgar Froese had started to release numerous compilations with his material from former albums, Jerome Froese chose to re-release material from the Dream Mixes series -- hence the name DM 2.1.
The album contains three tracks from the album The Dream Mixes (1995) and five from the album TimeSquare (1997) which apparently were soundwise cleaned-up a bit but not remixed. To make this release interesting to those who already owned these original releases, Jerome Froese decided to add two bonus tracks. One of them is a version of Pixel Pirates which is some three minutes longer than the one released on TimeSquare, the other, Paranormal Skills is a previously unreleased composition, recorded in 2006.
The cover artwork, reminiscent of that of The Past Hundred Moons (2001), is completely new, and the disc has a special, red surface. Notably, neither cover nor the CD itself feature the full name of Tangerine Dream but the well-known abbreviation TD only (probably due to copyright reasons).
It is unknown whether this compilation has been a commercial success, but (at time of writing) Jerome Froese did not release a similar compilation on his own so far.