Solution 45 is a metal supergroup from Sweden, created by former guitarist Jani Stefanovic (Miseration, Essence Of Sorrow). Their current lineup includes vocalist Christian Älvestam (Miseration, ex-Scar Symmetry), guitarists Patrik Gardberg (Torchbearer, The Few Against Many, Ammotrack) and Tom Gardiner (Hateform), bassist Anders Edlund (Angel Blake), and drummer Rolf Pilve (Miseration, Essence Of Sorrow).
In late 2007 Jani Stefanovic formed Solution 45, with Christian Älvestam (who had left Scar Symmetry in 2008) joining as one of its last members. Jani stresses that despite Christian's presence in the band, it will not be a Scar Symmetry clone and that songs had been ready for some time before his arrival. In the fall of 2008 an 8-track demo was produced by Tomas "Plec" Johansson (Unmoored, Scar Symmetry), with a demo track titled "Clandestinity Now" available over the internet.

Solution 45 entered Panic Room Studios in September 2009 to record its first full-length album For Aeons Past, with Dark Tranquillity vocalist Mikael Stanne writing all the lyrics for the album. The record was finished and mastered in December 2009, and was issued by AFM records in Europe and Marquee/Avalon in Japan; released on 9 April 2010 in Europe, and May 11 in North America.

On January 23, 2010, it was announced that the band was parting ways with keyboardist Mikko Härkin. Mikko still contributed keyboards to the record, but he is regarded as a guest musician on the album, rather than a permanent band member. Furthermore, it was announced on May 29, 2010 that Jani Stefanovic was leaving the band amicably, and Patrik Gardberg (from Torchbearer, The Few Against Many, and Ammotrack) would be his replacement. The band still wishes to involve Jani in future work, including future albums.

Source : http://en.wikipedia.org/wiki/Solution_.45