Complex sentence: He was born in Milan and learnt to sing from his father, Domenico, who had been a celebrated tenor in his time, and made his debut at Pavia in 1831, as Valdeburgo in Bellini's "La straniera".
Split into simpler sentences: He was born in Milan and learnt to sing from his father, Domenico, who had been a celebrated tenor. He made his debut at Pavia in 1831, as Valdeburgo in Bellini's "La straniera".