Sanae-chan is one of the characters from Pop'n Music.

リエちゃんの友達。
歌がとっても上手で休みの日にはよく彼女と一緒にカラオケに行ってるんだって。
最近はギターの教室にも通っているの。
A friend of Rie-chan.
She sings very well, and often goes to sing karaoke with her on her off days.
She's been taking guitar classes lately.^[​1]

Sanae-chan is Rie-chan's best friend. She enjoys playing guitar and singing, and has recently taken up guitar lessons.