EntityQ1103750· pop 23· linked from 145 articlesdiapasonSign in to savepitch reference to which a group of musical instruments are tuned for a performanceConnectionsInternational Organization for StandardizationEntityA440EntityLudwig van BeethovenEntityWorld War IConceptStuttgartEntityGiuseppe VerdiEntityInternational Standard Book NumberEntityBirminghamEntityGeorge Frideric HandelEntityprime numberEntitymusical instrumentEntitytrumpetEntityfrequencyEntityTreaty of VersaillesEntityThe New York TimesEntityHeinrich HertzEntityclarinetEntitydigital object identifierEntityInternational Standard Serial NumberEntityThe Washington PostEntityCategoriesPitch (music)