Complex sentence: Carpenter was featured on the Girl Meets World theme song, "Take On The World" with her co-star, Rowan Blanchard, she also sung a remixed version of "Take on The World".
Split into simpler sentences: Carpenter was featured on the "Girl Meets World" theme song, "Take On The World", which also featured her co-star, Rowan Blanchard. Carpenter also sung a remixed version of "Take on The World".