Just after his second song of the night, Stephen Kellogg told his hometown fans why he keeps coming back to Boston to play. “It’s magic,” he said. “Really, this city is magic.”

Last Friday night, fans, friends and family members alike poured in from the rainy streets of Boston to the sold-out Paradise to see Northhampton natives the Sixers put on another unforgettable show. As red stage lights dramatically switched on, the opening cords to Journey’s “Don’t Stop Believing” rang out through the club and led into the Sixers’ recent single “4th of July.”

Regardless of whether the band’s comfort on stage came from its familiarity with the audience and the venue — it has played at Paradise before and in Boston several times over the past few years — or from the many drinks lining the stage, there was constant interaction with the audience.

“It gets a little bigger in each city,” Kellogg said, “but in Boston, we always feel special.”

Although electric guitarist/bassist Chris Soucy could not make it on the road with the Sixers this fall, Kellogg found a worthy short-term replacement in Kyle Riabko. The 20-year-old singer-songwriter from Canada also happens to be one of Kellogg’s best friends.

Throughout the Sixers’ tour, the attractive Riabko is rapidly gaining popularity for not only his looks, but his poignant voice and impressive guitar skills, as seen in the nightly guitar duel between him and Kellogg.

The guitar, however, is merely one of the many instruments in which the Sixers are skilled. From the keyboard to the keytar, the mandolin to the harmonica, the Sixers prove they are not just a bunch of guys with nice voices and entertaining lyrics, but truly legitimate musicians.

New renditions, an ‘Elvis Presley meets The Kinks’ round of improvisational joke-telling and a medley of decade-based covers peppered the set.

Across town from Game Six, the Sixers played Fenway’s signature anthem, “Sweet Caroline.”

Evidently, there is a Stephen Kellogg and the Sixers that you can only hear in concert, and perhaps only in their hometown; in Kellogg’s words, “This is our favorite city in the whole entire country! You guys let us do whatever we want and we appreciate that so much.”