Guido and Maurizio de Angelis are Italian musicians. The two brothers were born in Rocca di Papa (Italy), Guido in 1944 and Maurizio in 1947. They have composed and sung the music for many films, under the name Oliver Onions. They are most famous for their soundtracks to Terence Hill and Bud Spencer movies. In November 2007, they gave their first concert in 25 years at the Lucca Comics Festival. They began their career playing the guitar, then Maurizio graduated in composition and harmony, while Guido studied flute.