Complex sentence: Sir Ivor Atkins (born Llandaff 29 November 1869-died Worcester 26 November 1953) was the choirmaster and organist at Worcester Cathedral for over 50 years, and is best-known for inserting the famous top-C part for the treble in Allegri's Miserere.
Split into simpler sentences: Sir Ivor Atkins (born Llandaff 29 November1869, died Worcester 26 November1953) was the choirmaster and organist at Worcester Cathedral for over 50 years. He is best known for inserting the famous top-C part for the treble in Allegri's Miserere.