There are multiple musical groups with the name Cikada:

1) A Swedish band.
2) A Norwegian contemporary music ensemble.

1) Cikada was a band from Gävle, Sweden in the mid-90s, centered around vocalist and multi-instrumentalist Thomas Jackson (b. 1976). They played a few gigs in Gävle and released a three-track CD single "Älvan" ("The Fairy") in 1994.
On the single, the lineup was Thomas Jackson (vocals, guitars, bass, keyboards, harmonica), Jöns Ahlén (drums, percussion, backing vocals), and Pia Påltoft (flute, backing vocals, fairy). Jackson and Ahlén had previously played together in the local band Galaxy.
Thomas Jackson has, among other things, played on Di Leva's 2000 album Älska, and released a solo album in 2005 as The Beep Kid.

2) Cikada or Cikada Ensemble is a musical ensemble from Norway founded in 1989, playing mainly contemporary music and contemporary classical by Norwegian composers such as Eivind Buene, Rolf Wallin and Cecilie Ore. Members of the Cikada Ensemble are also organized in smaller connected groups such as Cikada String Quartet and Cikada Duo, varying from project to project, often led by Norwegian conductor Christian Eggen.