Complex sentence: However, her record label Avex Trax decided to release a remix album titled "Ayu-mi-x" that marked the beginning of incorporate musical elements outside of her pop rock sound, including trance, house and electronic music.
Split into simpler sentences: However, her record label Avex Trax decided to release a remix album titled "Ayu-mi-x". The record marked the beginning of the incorporation of music elements outside of her pop rock sound, including trance, house and electronic music.