Complex sentence: She also plays guitar and piano and has been playing for the last two years with a trombone player, Michael Flury and a multi-instrumentist (flute, piano, guitar), Christian Prader.
Split into simpler sentences: She also plays guitar and piano, which she has been playing for the last two years. She plays with a trombone player, Michael Flury and a multi-instrumentist (flute, piano, guitar), Christian Prader.