Japan has a long tradition of audience participation in performance, from Matsuri to Baseball Games. In Idol Culture the fans cheer on the idols during the songs. Its not required to be a fan, but its fun.

There are different types of calls and mixes. This is an ever evolving culture surrounding fancalls and mix chants.

English Mix

Japanese Mix

To begin understanding, please watch these videos:

The man who popularized MIX in Japan explains what MIX is, Encho's Video on MIX (Producer of Jewel Kiss)

A collection of various call part I

A collection of various call part II

Yuyu's How to call mix video

Part 1 of Akiba Koala's Guide to Fan Chants

Part 1 of Akiba Koala's Guide to Fan Chants

PercyDW's guide to mixed call and fanchants (Shows Some Hello Project Styled Chants at a live)

A playlist o Idol Fancalls from the 80's (You better download it while it lasts)

https://www.youtube.com/playlist?list=PLVDYrLVksSzwB5nn0V0FBAQ5wRdofCn11