You can't play the piano. You can't play the guitar. You have never played an instrument. 　But it's okay. There is computer music. 　If you have a "computer" , "music software" , "sound sourse" and "score" , you can play your own music. Moreover , if you save the performance as a MIDI file , you can listen to it anytime just by double-clicking the file. Furthermore , if the MIDI file is converted for audio , you can listen to it with caraudio while driving. 　My first encounter with computer music was at a bookstore when I came across a book titled "Misterious and Fun Introduction to Computer Music (by Yu Yoneda) (Technical Review Company)". 　There was an explanation of what I need to start computer music , but for me as an amateur, there were so many different types that I couldn't choose from then. 　However , when I saw the description that there was a set of "music software", "sound sourse" , and "MIDI interface" necessary for computer music , "Roland's Mujiro" was the best for me as an amateur , so I bought it. 　Currently , I am using "Mujiro Net Campus" which is a set of "music software (music creater) " , "music sourse (Campus SD-20)" and "USB cable". 　The MIDI files in the table below were created using "Mujiro Net Studio" and can be listened to by clicking on them. I can't say that I'm very good at it , but I have a special feeling for what I created. You can enjoy powerful sound by attaching speakers (sold separately) to your computer.