Complex sentence: In May 1991 a concert in Besançon was cut short after four songs when Bertrand Cantat collapsed on stage, resulting in the band taking a break from touring until the release of their next album, "Tostaky".
Split into simpler sentences: In May 1991 a concert in Besançon was cut short after four songs when Bertrand Cantat collapsed on stage. As a result the band took a break from touring until the release of their next album, "Tostaky".