High Quality Content by WIKIPEDIA articles! Alesis Fusion is a music production workstation produced by Alesis introduced in early 2005. The workstation is available in two models. The Fusion 6HD is a sixty-one note semi-weighted keyboard workstation. The Fusion 8HD is an eighty-eight note weighted keyboard workstation. The two models are identical aside from the keyboard type. It competes with the Korg Triton, the Yamaha Motif and the Roland Fantom-X.