For more details, please see below. https://www.ongakunotomo.co.jp/catalog/detail.php?id=192505 [Feature 1] You'll hear more, and the sound will change! How to use "Choral & Vocal Practice" Whether incorporating singing into practice, having a chorus in a piece, or performing a full-fledged choir at a concert... there are surprisingly many situations where you "sing" even if you're in a wind band. From the basics to the musical aspects, there are many benefits to incorporating singing into your practice. If you're going to sing, why not do it more beautifully and effectively? Why not aim for a two-sword style of wind band (instrument) and chorus (singing)?