Klaus & Servants was a Danish pop band, established in 1965 in Præstø by Klaus Strand-Holm. They made their recording debut as The Servants in 1968 with two unsuccessful singles. From 1971 the band was marketed as Klaus & Servants, and the national break-through came same year with the single 'Bank tre gange' that reached number 1 on the Danish chart. 'Ring! Ring!' was released in May 1973, just two months after the song was performed at the Swedish national final.
My collection: 7" single no. 6876
Found: Discogs.com, received 25 February 2023
Tracks: 'Ring! Ring!' / 'Har du glemt?'