In music classes, it is necessary for students to acquire basic skills so that they can develop the ability to express themselves through music. This demands methods of instruction that allow the effective acquisition of musical skills. In this regard, developing instruction methods for clear vocalization are particularly important. The present study focused on confirming effective vocal coaching methods through the use of hand gestures and figurative key phrases. In the present study, we made use of tablet devices in part practice so that students could learn actively and collaboratively. We concluded that tablet devices are an effective tool for acquiring musical skills because they allow students to listen objectively to their own performances.