Talk about moving on up. West Coast new-school soul troupe Fitz and the Tantrums have played progressively bigger rooms as they’ve swung through Nashville on tour — from 3rd & Lindsley less than a year ago, to a sold-out Mercy Lounge gig in July, now upstairs to the comparatively vast Cannery Ballroom. Not bad for a band with no guitar. And they certainly deserve the upward mobility. We may have jokingly tried to start some revivalist beef by calling Fitz the present-day equivalent of Tupac to Sharon Jones and The Dap-Kings’ Biggie, but it was all in fun. And the Tantrums’ vibrant, Stax/Motown-influenced take on indie pop keeps a tight focus on big melodies, with the kind of deep grooves that recall the style and energy of the bygone ’60s without feeling trapped by them. Take advantage of the bigger dance floor.