Besides his solo career, he is well-known as a member of the group Formula 3 and for his collaboration with prominent artists such as Lucio Battisti and Franco Battiato.

[1][2] After experiences with the Mario Perrone orchestra and with the band I Campanino, he briefly entered the group I Quelli (later renamed as Premiata Forneria Marconi), replacing Franco Mussida during his military service.

[1][2] In 1969, together with Gabriele Lorenzi and Tony Cicco, Radius formed the band Formula 3, with whom, under the production of Lucio Battisti, he had significant success for a lustre.

[1] After the disbandment of Formula 3 in 1974, Radius was part of the short-lived progressive rock musical project Il Volo and from 1976 he reprised his solo career.

[1][2] In the second half of the 1980s Radius formed the group Cantautores with whom he released two albums and served as live band in several television programs; in 1990 he joined the Formula 3 reunion.