Complex sentence: The group gained further mainstream success in 2016 with the lead single, "Talk Too Much", from the band's second studio album, "How Will You Know if You Never Try", which will be released on April 21,2017.
Split into simpler sentences: The group gained further mainstream success in 2016 with the lead single, Talk Too Much ", from the bands second studio album," How Will You Know if You Never Try. The bands second album, "How Will You Know if You Never Try," is set to release on April 21,2017.