Hi there,
@nb: Joker is quite right. Almost all music is playback on this TV show. Even the "Super Live" one.
It is not the same as festivals where bands plays many songs, and the audience have paid to see a performance with technicians for each bands, while on TV Shows, audience are just "guests". It is also due to acoustic, a TV studio is not made for instruments performance.
It is a serious problem for many rock bands who did not want to fake playing, you have many famous band who make joke of this like a TV appearance of Muse or Iron Maiden, with musicians trading their places.
To be back at Music Station, hide use to make crazy thing during these performance like 1991 Silent Jealousy where he headbanged and jumped around the last part of the song, which he can t normaly if he was really playing.
Sugizo even make a magic solo of Rosier or Storm, without playing his guitar
A real magic trick.
The clue is to look the electric instrument, most of time, they are not even plugged to a wireless system.
But if you played acoustic, or not loud music which needs mix and balance, you are fine.