ALL-JAPAN KARAOKE INDUSTRIALIST ASSOCIATION(n.d).Karaoke sannka zinnkou to Karaoke bokkusu ruumu suu no suii [the changes of the participation number of people of the Karaoke and the number of karaoke rooms]http://www.karaoke.or.jp/05hakusyo/2017_p1.php

 Retrieved December 11, 2017, from Ippan syadan houzin zenkoku karaoke zigyousya kyoukai

 

Arakane, E & Kawade, F (2009) Oto wo kikukoto, uta wo uatukoto niyoru rirakuseisyonn sayou : sinntaiteki oyobi sinnriteki hennka [Relaxation Effects of Listening to Music and Singing Songs : Physical and Psychological Changes] Journal of Kawasaki Medical Welfare Society,19,1

 

Kitamura, A, Tagaya, A & Matumoto, Z (2015) Karaoke to hitokara ni yoru sinnsinn heno kouka [effect on the mind and body by Karaoke and Hitokara] Shinshu Public Health Magazine,10,1