The Roots at Brooklyn Bowl The Tonight Show’s renowned hip-hop crew kicks off its second go-round at the Linq music hub, with what figures to be a blowout performance packed with crazy covers, beloved originals and guest drop-in potential. 9 p.m., $83. Also: January 2 & 3, 9 p.m., $44.

Maroon 5 at Mandalay Bay Events Center Whether you’re an M5 diehard dating back to the Songs About Jane days or a fan of The Voice curious to see whether Adam Levine can sing better than the contestants he’s passed over, this show should have you covered. With Rozzi Crane. 7 p.m., $100-$225. Also: December 30, same time, price & opener.

Tony Bennett & Lady Gaga at the Chelsea Music’s oddest couple perform songs from September’s American songbook duets albums, Cheek to Cheek. Personally, we’re also hoping Tony takes a shot at “Poker Face.” The Cosmopolitan, 9 p.m., $125-$250; Also: December 30, 7 p.m., $125-$250.

Crazy Chief, Rusty Maples, Same Sex Mary & Mercy Music at Bunkhouse Saloon Four of the Vegas scene’s performing warhorses team up to take partiers on a trip from punk to indie-pop. This one’s absolutely free, so buying those rounds for your buddies won’t break the bank anywhere near as badly. 9 p.m.

ALSO: The Boss Martians at Double Down Saloon (with Thee Swank Bastards, 10 p.m., free); The Casualties at Dive Bar (with Rule of Thumb, IDFI, Brutal Resistance, Lambs to Lions, The Core, 8 p.m., $25-$30); Graceland Ninjaz at House of Blues (with The Roxy Gunn Project, 7 p.m., $15); Nekromantix at LVCS (with Delta Bombers, The Returners, Deadbeat Vultures, Dead at Midnight, Hard Fall Hearts, 8 p.m., $22-$27); Sevendust at Vinyl (with Silversage, 9 p.m., $67-$125); TributePalooza at Fremont Street Experience (6 p.m., $30-$40).