Memory Lane

Gonzo once sang '"Memory Lane" on The Muppet Show, accompanied by Rowlf on the piano. Though it aired in the 1970s, the Sixth Doctor was sure the song itself had originated before then.

Emily Chaudhry was angry at Will for playing the song during a World War II air raid, but the Doctor assured her that Gonzo would not destroy the timelines. (PROSE: Incongruous Details)