Question: What Christmas song reached number 1 in 1974 by the the English glam rock band Mud,?
Sentence (from "Mud (band)"): Their earlier success came in a pop and then glam rock style, while later hits were influenced by 1950s rock and roll, and are best remembered for their hit singles "Tiger Feet", which was the UK's best-selling single of 1974, and "Lonely This Christmas" which reached Christmas number 1 in December 1974.
Relevant evidence: No