Complex sentence: Although she was taught the hand gestures of playing the piano in the making of the video, she can indeed play as she was credited for playing the acoustic piano in the single's booklet and also in the ULTRA BLUE booklet.
Split into simpler sentences: Although she was taught the hand gestures of playing the piano in the making of the video, she can indeed play. She was credited for playing the acoustic piano in the song in the single's booklet and also in the ULTRA BLUE booklet.