Complex sentence: Not long afterwards, in high school, Farri came along with a good sense in music arranging--and, of course, with the same taste of music--so they started to write their own songs and played in local gigs or school events.
Split into simpler sentences: Not long afterwards, in high school, Farri came along with his good sense in arranging music, and of course with the same taste of music. So they started to write their own songs, and played in local gigs, or school events.