Michael Joseph Porcaro was an American bass player known for his work with the rock band Toto. He retired from touring in 2007 as a result of being diagnosed with amyotrophic lateral sclerosis (ALS).

Steven Maxwell Porcaro is an American keyboardist, songwriter, singer, and film composer, known as one of the founding members of the rock band Toto and the last surviving Porcaro brother ; as the songwriter of "Human Nature" by Michael Jackson and songs by Toto; and as the composer of the TV series Justified. He has won three Grammys, including Record of the Year for "Rosanna" and Album of the Year for Toto IV, and three nominations.