It stated that Cooper was “one of the best tenors the JMTC ever had”; that he received many favourable critiques for his performances in concerts, stage shows and oratorios; and his finest musical was probably the JMTC 1985 production of Jesus Christ Superstar in which he sang Gethsemane – I Only Want to Say . It was later powerfully sung by another tenor, Rory Baugh.