Practically Toto - "Beat It" - Michael Jackson

Everyone knows that Eddie Van Halen played the guitar solo on this track, but Lukather played rhythm guitar AND bass on this mega hit. Also on this track Jeff and Steve P.

Practically Toto - "Human Nature" - Michael Jackson

Human Nature was originally written by Steve Porcaro for Toto.  But he got the non-vocal demo to Quincy Jones who liked it and sent it to lyricist John Bettis.  This track featuring Jeff and Steve Porcaro, Paich and Luke is basically Toto with Michael Jackson as lead singer.