Keep A Knockin is a song that plays on Diamond City Radio in Fallout 4. It is performed by Louis Jordan.
Lyrics
Keep a knockin' but you can't come in
Keep a knockin' but you can't come in
Keep a knockin' but you can't come in
Come back tomorrow night and try again.
I hear you knockin' but you can't come in
I know you've been drinkin' gin
You've been cheatin' round with other men
I'm busy and you can't come in.