You have {K-ON}.

A close-up of a brown-haired anime girl's face shows her with wide eyes and an open mouth, transitioning to a side view of a dark-haired girl singing into a microphone on a stage with red curtains. The scene then shows the dark-haired girl singing, followed by a blonde girl playing the drums, a close-up of hands on a red electric guitar, and finally a blonde girl smiling while playing a Korg Triton keyboard, all set on a stage with red curtains.