Complex sentence: She and her three other siblings live in Nashville where they are very active not only in the music business but also run an organization called People Loving Nashville who feed and clothe the homeless of Nashville.
Split into simpler sentences: She and her three other siblings live in Nashville. In addition to being active in the music business, Lampa and her siblings run an organization called People Loving Nashville, who's mission is to feed and clothe the homeless of Nashville.