Largely abandoning the post-hardcore sound that they made their name on, Sleeping With Sirens pave their major-label debut with a glossy mainstream sheen. From beat-forward pop-rockers (“Cheers,” “Empire to Ashes”) and passionate electro ballads (“One Man Army,” “Hole in My Heart”) to gospel-inflected tearjerkers (“War”) and a ridiculously catchy lead single in “Legends”—the official anthem of the 2018 Winter Olympic and Paralympic Games—the band seems to be signaling their readiness for prime time.