Mike Porcaro, who was the son and brother of prominent musicians and carved out a long, successful career as the bass player for the Grammy-winning pop group Toto, has died at age 59.
Porcaro died Sunday, Toto's publicist Keith Hagen told The Associated Press.
No cause was given, but he had suffered from Lou Gehrig's disease for several years. He left the group in 2007 because of declining health.
Lou Gehrig's disease, also called amyotrophic lateral sclerosis, or ALS, attacks the cells that control muscles.
"Mike mentally is fantastic, and if you talk to him, his spirits are up and he's great and like the old Mike Porcaro, except that he's disabled, he's in a...