Triad was a Swedish pop band consisting of the trio Janne Bark, Lasse Lindbom and Niklas Strömstedt. Triad is most famous for their 1987-1988 Swedish number-one single hit "Tänd ett ljus" ("Light a Candle"),one of the Swedish classic songs for the Advent season, just prior to Christmas. The outro includes Christmas and New Year's greetings in different languages. The single topped the Swedish singles chart on 6 January 1988. The song charted at Svensktoppen for eight weeks during the period 20 December 1987 – 14 February 1988. It has been subject to many cover versions. 　　The band was formed by three music friends. Janne Bark played the guitar, Lasse Lindbom of the Lasse Lindbom Band was bassist and producer, and guitarist Janne Bark and Niklas Strömstedt played the piano. All three were vocalists.