Karen O of the Yeah Yeah Yeahs at the Big Day Out in SydneyPhotograph: Damian Shaw/EPADaley performs at the Forum in LondonPhotograph: C Brandon/Redferns via Getty ImagesSouth Korean pop group Super Junior perform during the Korean Golden Disk awards in Sepang, MalaysiaPhotograph: Bazuki Muhammad/ReutersFlea of the Red Hot Chili Peppers performs at Big Day Out in Sydney, AustraliaPhotograph: Don Arnold/WireImageJoe Newman of Alt-J performs at Shepherds Bush Empire in LondonPhotograph: Jim Dyson/Redferns via Getty ImagesThe bilingual opera Cho Cho,adapted from Madame Butterfly, at the National Theatre of China in BeijingPhotograph: Li Yan/ Li Yan/Xinhua Press/CorbisJohn Tomlinson in The Minotaur at the Royal Opera HousePhotograph: Tristram Kenton for the GuardianJustin Bieber on stage in Birmingham, AlabamaPhotograph: Taylor Hill/FilmMagicDJ Zedd performs at the Highline Ballroom in New YorkPhotograph: Stephen Lovekin/Getty ImagesLil Jon performs in Park City, UtahPhotograph: Jonathan Leibson/Getty ImagesMiguel performs on stage in Birmingham, UKPhotograph: Steve Thorne/Redferns via Getty ImagesSmokey Robinson in concert at Hard Rock Live in FloridaPhotograph: Rex FeaturesSoprano Violeta Urmana and tenor Massimo Giordano at a dress rehearsal of Puccini's opera Tosca in Bilbao, Spain. Tosca will open Bilbao's 2013 opera season in BilbaoPhotograph: Alfredo Aldai/EPASouth Korean girl group 4Minute perform during the Korean Golden Disk awards in Sepang, MalaysiaPhotograph: Bazuki Muhammad/ReutersAmerican musician Herbie Hancock plays at a jazz festival in Panama CityPhotograph: Alejandro Bolivar/EPA