Until 1990, he was a completely self-taught musician who learned his craft on the job. Rigazzi sharpened his skills  while  backing many internationally known musicians such as Chet Baker, Jimmy Heath, Ed Shaughnessy and Chris Vadala. He would later study jazz bass with Cecil McBee in New York City.

In 1996, Rigazzi moved on to Kansas City, Missouri where he was asked to perform  at such venues as Jazz  in Marciac, France and Jazz Aspen as well as performing as guest artist and clinician for college and high school jazz festivals.