Aye, it´s true. German game music god Chris Huelsbeck worked together with a famous german orchestra (the "WDR Rundfunkorchester Köln"), to play some tunes of the C-64 and Amiga classic "The Great Giana Sisters". If that isn´t cool, I don´t know what is.
Of course, "Giana Sisters" isn´t the only piece he did together with that orchestra. The series is called "Symphonic Shades", you cant get some good glimpses at it at youtube.