Fusion is a combination of musical styles. It came out of the Jazz scene in the early 1970's, partly through embracing electric guitars, basses and keyboards.

Example 33a - Funk/Metal

Example 33b - Jazz/Rock

Notice how the bridge section of Example 33b changes to the odd time signature of 5/4.

Example 33c - Metal/Jazz/Funk

(Recorded live in concert by "Wired" in 1989).

Try jamming over some fusion grooves in the Session time section.