Complex sentence: Fontana Distribution is a subsidiary of Universal Music Group, launched in 2004, which engages in distribution for independent record labels, by provides sales and marketing support, as well as back office services, for a diverse roster of labels and their artists.
Split into simpler sentences: Fontana Distribution is a subsidiary of Universal Music Group that distributes music for independent record labels and was launched in 2004. It provides sales and marketing support, as well as back office services, for a diverse roster of labels and their artists.