Complex sentence: Orbison grew up in Texas and began singing in a rockabilly/country and western band in high school until he was signed by Sun Records in Memphis; his greatest success came with Monument Records in the early 1960s.
Split into simpler sentences: Orbison grew up in Texas and began singing in a rockabilly and country and western band in high school. He was later signed by Sun Records in Memphis, but his greatest success came with Monument Records in the early 1960s.