Complex sentence: Alongside his writing work, Dyson also plays keyboards in a pop band called Rudolf Rocker, and has previously been a member of Leeds band Flowers For Agatha in the 1980s.
Split into simpler sentences: Alongside his writing work, Dyson also plays keyboards in a pop band called Rudolf Rocker. Dyson had previously been a member of Leeds band Flowers For Agatha in the 1980s.