consists of four singers from Göteborg: Ingrid Brännström, Sanna Källman, Anna Ottertun and Maria Stellas. They have the same desire to share songs with each other. Everyone has many years of experience in singing music from different folk traditions. Meet Arabic and Greek ornamental song styles, Haiti pulse and Nordic groove. All in TETRA’s own arrangements, based on rhythmic vocal accompaniement, different voice timbres and percussion.


TETRA travels, plays and dances with the voices of the world’s vocal traditions. The result gets a very own Tetra nuance, with drums, vocal parts, improvisation and dance.


Join TETRA’s magical music world at the opening of the festival. They will present a program, where beautiful instruments and songs in languages from different  points of the compass meet.