Complex sentence: Carmouche got his musical start playing classical piano in grade school, laying the foundation for his musical career as a drum major in high school marching band and playing the Ensoniq ASR-10 keyboard he received as a gift at the age of 15.
Split into simpler sentences: Carmouche got his musical start playing classical piano in grade school. Carmouche's laid the foundation for his musical career as a drum major in high school marching band and playing the Ensoniq ASR-10 keyboard he received as a gift at the age of 15.