A family of musical instruments both acoustic (piano, harpsicord, etc.) and electronic which is played by depressing keys, each of which represent a musical tone. In electronic music, keyboards are often used to imitate other instruments or utilize wholly electronic sounds.
When playing music on keyboard/piano, what do the brackets mean? I know B and B# but what does (B-D) mean? I need to know so that I can complete the song I'm learning (Just Give Me a Reason by P!nk ft ...