Complex sentence: Originally the band started off with a nu metal and alternative metal sound, although with their third album White Pony they abandoned their nu metal sound, eventually continuing with an alternative metal sound and even moving to an experimental rock style as well.
Split into simpler sentences: Originally the band started off with a sound with nu metal and alternative metal. Although when they sold White Pony they abandoned their nu metal sound, continuing with an alternative metal sound and even moving to an experimental rock style as well.