Complex sentence: Christopher Tye (c 1505--c 1572) was an English composer and organist, who studied at Cambridge University and in 1545 became a Doctor of Music both there and at Oxford.
Split into simpler sentences: Christopher Tye (c 1505--c 1572) was an English composer and organist. He studied at Cambridge University, and in 1545 became a Doctor of Music both there and at Oxford.