Complex sentence: Lewis's career began founding and performing with the first production company in America for beatboxing, Beatboxer Entertainment, which has been featured on shows such as MTV and Fuse, and has performed in Madison square garden.
Split into simpler sentences: Lewis's career began founding and performing with the first production company in America for beatboxing, "Beatboxer Entertainment". Beatboxer entertainment has been featured on shows such as MTV and Fuse, and has performed in Madison square garden.