When Girlschool were recording in Rickmansworth with producer Vic Maile, he had the idea that Motörhead and Girlschool should record a single together. The result was this three-track EP, on which the bands duetted on a cover of Johnny Kidd & The Pirates' "Please Don't Touch". The bands also covered each other, with Motörhead performing Girlschool's "Emergency", and Girlschool playing Motörhead's "Bomber". The EP was recorded while Motörhead's drummer Phil "Philthy Animal" Taylor was recovering from a neck injury sustained playing "who can lift each other up the highest" with a large Irishman, so Girlschool drummer Denise Dufort played on all three songs.
The EP was released in 1981 in 7" and 10" vinyl formats, with the same cover and track listing. It reached #5 in the UK Singles Charts.
A bootlegSt. Valentine's Day Massacre exists, a double 12" vinyl album with white labels. It contains recordings of Motörhead and Girlschool's sets from a 1981 Rockstage TV Special from The Theatre Royal in Nottingham.