Mungo Jerry are a British rock group whose greatest success was in the early 1970s, though they have continued with a changing line-up that has always been fronted by Ray Dorset. The group's name was inspired by the poem "Mungojerrie and Rumpelteazer", from T. S. Eliot's Old Possum's Book of Practical Cats. They are identified with their biggest hit "In the Summertime". It remains their most successful and most instantly recognisable song.