[2] The initial recording was made at a Youth center at Nylöse, a neighborhood of Gothenburg, Sweden's second biggest city, and the song has professionally been re-recorded in a studio twice.

"Sleep Little Girl" became one of Tages's biggest hits, and is, along with "Miss Mac Baren", considered to be their signature song.

[3] Previous to recording "Sleep Little Girl", Tages had gained traction around the Gothenburg area of Sweden.

[5] Blom was at the time at a vacation in London, United Kingdom to improve his English skills, meaning that Tages performed as a quartet, which was the requirement.

The narrator, furious about this, he picks up a big stone intending to throw it at the window, but instead misses and lands on the roof, causing loud sounds to erupt.

[10] This version was first issued in January 1965, when the single was re-pressed due to the massive success it achieved.

[12] "Sleep Little Girl" was initially released on 16 October 1964 by Platina Records with the catalogue number PA 102.

[11] This version has never received an official digital release, and remains among the rarer tracks recorded by Tages.