[2] The band recorded a number of songs before the name was changed to The American Breed in 1967.

Loizzo was the lead singer of The American Breed, which had several hit records in 1967-1968, including the #1 million-selling single "Bend Me, Shape Me", and two other top 40 Billboard singles "Green Light" and "Step out of your Mind" and other top 100 hits.

[4] He worked with REO Speedwagon, Styx, Bad Company, Slash, Survivor, Liza Minnelli, Tenacious D, Nelson, and many others.

Loizzo has been the lead recording engineer for albums that have sold over 50 million copies worldwide.

Gary was inducted into the Illinois Rock and Roll Hall of Fame in 2022 for his Recording Engineering accomplishments and his impact on the Chicago music industry.