Complex sentence: Ryder appeared on British tenor Russell Watson's 2001 debut album "The Voice", lending his vocals to a cover version of the Freddie Mercury and Montserrat Caballé song "Barcelona".
Split into simpler sentences: Ryder appeared on British tenor Russell Watson's 2001 debut album "The Voice". He also lent his vocals to the Freddie Mercury and Montserrat Caballé song "Barcelona".