As we reported last month, Boston hardcore math rockers I Kill Giants embarked on their final tour in December. For its last show, the band will return to the Democracy Center in Cambridge this Friday, and they won’t be alone. The band will celebrate with Old Gray, the Hotel Year, Everything Ever and Fall Risk. Hailing from New Hampshire, Old Gray is a screamo/punk band that’s gained a national (and international) following since forming in 2011. Worcester-based The Hotel Year has a similarly rough-around-the-edges sound and a new album, "Home, Like Noplace Is There," coming out in February. Everything Ever, from Staten Island, plays an energetic blend of indie rock and pop punk, and Boston’s own Fall Risk describes its genre as "heartfelt frustrated punk." Witness the end of an era and a great night of music beginning January 24 at 7 p.m. – Jake Reed