In fourth generation home video games and PCs this was limited to playing a Mixed Mode CD audio track from a CD while the game was in play (such as "Sonic CD"). The earliest examples of Mixed Mode CD audio in video games include the TurboGrafx-CD RPG franchises "Tengai Makyō", composed by Ryuichi Sakamoto from 1989, and the "Ys" series, composed by Yuzo Koshiro and and arranged by in 1989. The "Ys" soundtracks, particularly "Ys I & II" (1989), are still regarded as some of the most influential video game music ever composed.