Sing your heart out for free!
It's Callie vs. Marie in the last ever Splatfest event in Splatoon for Wii U on 22nd July, News
Free Karaoke on Switch Starts June 2 - : Japan-based Nintendo Podcasts, Videos & Reviews!
Karaoke JOYSOUND for Switch gets another round of free play days, The GoNintendo Archives
Sing the best songs for free! Karaoke JOYSOUND for Nintendo Switch Winter Campaign - Saiga NAK
An update on Karaoke @ DAM for Japan's Xbox One – Gameluv
Europe] Wii Karaoke U: new songs (March 2017) - Perfectly Nintendo
eShop JP] Karaoke JOYSOUND - First Look
Nintendo Switch rhythm games: a guide
Karaoke Joysound - Nintendo Wii
Karaoke Joysound (wii)
Nintendo running free song campaign in Karaoke JOYSOUND for Switch, The GoNintendo Archives