DTM講座 DTM入門①~MIDIとオーディオ♪ https://mixingmusicpro.com/blog/dtm-lesson/dtm%e8%ac%9b%e5%ba%a7%e3%80%80dtm%e5%85%a5%e9%96%80%e2%91%a0%ef%bd%9e%ef%bd%8d%ef%bd%89%ef%bd%84%ef%bd%89%e3%81%a8%e3%82%aa%e3%83%bc%e3%83%87%e3%82%a3%e3%82%aa%e2%99%aa/