Ma'anar ƙamus na "opera mai haske" yana nufin nau'in wasan kwaikwayo na kiɗa ko opera wanda yawanci ya fi guntu kuma ba ya da tsanani fiye da wasan kwaikwayo na gargajiya, da kuma fasalin tattaunawa tsakanin lambobin kiɗa. Wasan operas masu haske sukan haɗa abubuwa na ban dariya, soyayya, da raye-raye, kuma ana siffanta su da kaɗe-kaɗensu masu ban sha'awa da salon isarsu. Misalan mashahuran wasan operas masu haske sun haɗa da Gilbert da Sullivan's "The Mikado" da "H.MS.S. Pinafore," da Franz Lehár's "The Merry Widow."