Abstract: An electronic musical instrument includes a database including timbre data corresponding to a plurality of musical instruments an acoustic data input unit configured to display an acoustic data input position corresponding to a selected one of the musical instruments, detect whether the acoustic data input position is touched, and receive information on the touched acoustic data input position a mouthpiece detachably provided and having a shape corresponding to a shape of a mouthpiece of the selected musical instrument a wind sensor unit configured to measure an amount of air to generate loudness data a control unit configured to receive timbre data corresponding to the information on the touched acoustic data input position, receive the loudness data from the wind sensor unit, and synthesize the timbre data and the loudness data to output an acoustic sound signal of the selected musical instrument and a power supply unit configured to supply power.