Detana!! TwinBee, released in Europe and North America as Bells & Whistles, is a 1991 vertically scrolling shooter arcade video game developed and released by Konami. It is the fifth entry in the TwinBee series and the second to be released for arcades following the original TwinBee. Set several years after the events of TwinBee, players assume the role of Light and Pastel taking control of TwinBee and WinBee to defeat invading forces of the evil alien Iva and save planet Meru after receiving an SOS message sent by Princess Melora.

TwinBee (ツインビー) is a video game series composed primarily of cartoon-themed vertical-scrolling shoot-'em-up games produced by Konami that were released primarily in Japan. The series originated as a coin-operated video game simply titled TwinBee in 1985, which was followed by several home versions and sequels. The character designs of almost every game in the series since Detana!! TwinBee in 1991 were provided by Japanese animator Shuzilow HA, who also planned and supervised most of the subsequent installments in the TwinBee series. The series also inspired a radio drama adaptation that lasted three seasons in Japan, as well as an anime adaptation.