At this year's edition of the cross-cultural Berlin festival, Luke Turner finds questions asked and answered about the malleable nature of "pop", the therapeutic nature of Cats Eyes' music, the raw power of Algiers and the necessity of European co-operation. (Photographs: Annett Bonkowski)
Nick Reed returns to Genesis' hefty 1974 double album opus, and finds, in-between the near-incomprehensible narrative and patchy second disc, a record that offers many fine moments and stakes a good claim to being the pinnacle of prog excess