South London’s Gentle Friendly craft noisy yet atmospheric music that spans everything from Animal Collective’s hazy melodies to No Age’s tantrums to glitchy electronics and hip-hop-tinged beats. Singer\u002Fkeyboardist David Morris and drummer Daniel Boyle formed Gentle Friendly in 2007, when one of their friends found a drum kit in the trash and the pair acquired some old keyboards, including a Casio MT-40. An early version of Gentle Friendly also included guitar, but Morris soon scrapped the strings...