Ted Arnbjörn Gärdestad (Swedish pronunciation: [ˈtɛdː ˈjæ̂ːɖɛˌstɑːd]; 18 February 1956 – 22 June 1997) was a Swedish singer, songwriter, musician and actor known internationally as Ted. Gärdestad began his acting career in 1966 and began playing music in 1971, signing with Polar Music. Assigned with in-house producers Benny Andersson and Björn Ulvaeus, Gärdestad released his first single, "Hela världen runt," in late 1971 and worked closely with the four members of ABBA to create his debut album Undringar (1972).
https://en.wikipedia.org/wiki/Ted_G%C3%A4rdestad