Complex sentence: Smith once fronted the metal band Fydolla Ho, with whom she toured the United States and the United Kingdom, and was half of Smith & Pyle, a desert country-rock band, with actress Missi Pyle.
Split into simpler sentences: Smith once fronted the metal band Fydolla Ho, with which she toured the US and the UK. She was half of Smith & Pyle, a desert country-rock band, with actress Missi Pyle.