Concertina/ˌkɑːnsərˈtiːnə/ Definition 1 of 3Pro Tip 1/3Musical Genre Often associated with folk, sea shanties, and classical music. The concertina is prominent in English naval folk music. Pro Tip 2/3Portability Small and portable, making it popular for impromptu musical gatherings. He brought his concertina to the picnic for a sing-along. Pro Tip 3/3Non-Electric An acoustic instrument not requiring electricity, can be played anywhere. Around the campfire, her concertina's melody filled the air.