Roots of Procol Harum

Murray Seafield St George Head is an English actor and singer. Head has appeared in a number of films, including a starring role as the character Bob Elkin in the BAFTA award-winning and Oscar-nominated 1971 film Sunday Bloody Sunday. As a musician, he is most recognised for his international hit songs "Superstar" and "One Night in Bangkok". He has been involved in several projects since the 1960s and continues to record music, perform concerts, and make appearances on television either as himself or as a character actor.

The Flamin' Groovies are an American rock band that formed in San Francisco in 1965, originally co-led by Roy Loney and Cyril Jordan. After the Groovies released three albums, on Epic (Supersnazz) and Kama Sutra, Loney left the band in 1971. He was replaced as co-leader by Chris Wilson, and the band's emphasis shifted more toward British Invasion power pop.

Johann Sebastian Bach was a German composer and musician of the late Baroque period. He is known for his prolific output across a variety of instruments and forms, including the orchestral Brandenburg Concertos; solo instrumental works such as the Cello Suites and Sonatas and Partitas for Solo Violin; keyboard works such as the Goldberg Variations and The Well-Tempered Clavier; organ works such as the Schübler Chorales and the Toccata and Fugue in D minor; and choral works such as the St. Matthew Passion and the Mass in B minor. He is known for his mastery of counterpoint, as heard in The Musical Offering and The Art of Fugue. Felix Mendelssohn precipitated the Bach Revival with a performance of the St. Matthew Passion in 1829. Ever since, Bach has been acclaimed as one of the greatest composers in the history of Western music.

The Rascals are an American rock and blue-eyed soul band formed in Garfield, New Jersey, southeast of Paterson in 1965. The original lineup featured lead vocalist and keyboardist Felix Cavaliere, vocalist and percussionist Eddie Brigati, drummer Dino Danelli, and guitarist and vocalist Gene Cornish. Cavaliere and Brigati wrote the majority of the Rascals' original material.