Jeffrey Thomas Porcaro (; April 1, 1954 – August 5, 1992) was an American drummer, songwriter, and record producer. He is best known for his work with the rock band Toto but is one of the most recorded session musicians in history, working on hundreds of albums and thousands of sessions. While already an established studio player in the 1970s, he came to prominence in the United States as the drummer on the Steely Dan album Katy Lied. AllMusic has characterized him as "arguably the most highly regarded studio drummer in rock from the mid-'70s to the early '90s" and says that "it is no exaggeration to say that the sound of mainstream pop/rock drumming in the 1980s was, to a large extent, the sound of Jeff Porcaro." He was posthumously inducted into the Modern Drummer Hall of Fame in 1993. Early life Jeffrey Thomas Porcaro was born on April 1, 1954, in Hartford, Connecticut, the eldest son of Los Angeles session percussionist Joe Porcaro (1930–2020) and his wife, Eileen. His younger brother Mike was a successful bassist and was a member of the band Toto. Younger brother Steve is still a studio musician and also was a member of Toto. Porcaro was raised in the San Fernando Valley area of Los Angeles and attended Ulysses S. Grant High School. Jeff's youngest sibling was sister Joleen, born in 1960. On October 22, 1983, Porcaro married Susan Norris, a Los Angeles television broadcaster at KABC-TV. Together, they had three sons, Christopher Joseph (1984), Miles Edwin Crawford (1986 - 2017) and Nico Hendrix (1991). Career Porcaro began playing drums at the age of seven. Lessons came from his father Joe Porcaro, followed by further studies with Bob Zimmitti and Richie Lepore. When he was seventeen, he got his first professional gig playing in Sonny & Cher's touring band. He later called Jim Keltner and Jim Gordon his idols at that time. During his twenties, Porcaro played on hundreds of albums, including several for Steely Dan. He toured with Boz Scaggs before co-founding Toto with his brother Steve and childhood friends Steve Lukather and David Paich. Jeff Porcaro is renowned among drummers for the drum pattern he used on the Grammy Award-winning Toto song "Rosanna", from the album Toto IV. The drum pattern, called the Half-Time Shuffle Groove, was originally created by drummer Bernard Purdie, who called it the "Purdie Shuffle." Porcaro created