Complex sentence: They also made inroads with the college crowds at the universities after three years of playing out and opening for such icons as the Nitty Gritty Dirt Band, Exile, and the Gatlin Brothers.
Split into simpler sentences: They also made inroads with the college crowds at the universities. After three years of playing out and opening for such icons as the Nitty Gritty Dirt Band, Exile, and the Gatlin Brothers.