UPDATE: Due to leaks in the theater from rapidly-melting snow, The Center has had to cancel this show.\u00a0\r\n\r\nJACKSON, Wyo. \u2014 For an original-minded, funky resort town band to be touring and recording for eight years straight is an accomplishment alone. Though for Sneaky Pete & the Secret Weapons (SPSW), the opportunity to transpose its usual late night party show into \u201can evening with\u201d inside the confines of Jackson\u2019s largest performing arts space, there\u2019s a clean slate of sorts. The quintet will expand and contract as an acoustic band before climaxing into a ten-piece electric groove ensemble on Tuesday at the Center Theater.\r\n\r\nWhen I sat down last week in Teton Village with keyboardist Galen Karnatz and bassist Sam Lowenthal, it had been a little over six years since I chatted with the full band in advance of their debut Album Release Show for Breakfast, circa 2014. The band was in their mid-twenties and had been together for about two years at that point. The vibe of youthful, musical excitement was in the air.\r\n\r\n\u201cWe\u2019re all living together now and have been practicing like five days a week,\u201d original drummer, Zach Zimmerman, had said during that interview.\r\n\r\nFast-forward to 2020, and the band\u2019s third drummer, Andrew Keehn, is in his final stretch of shows with the band after replacing Philip Walker in late 2018 (his final show will be Under the Tram on Gaper Day). Much like the band\u2019s roots, Keehn is one of three band members that still live together and maintain the band\u2019s practice space in Wilson where collaborative composition and sweat equity are still relatively accessible for two of the band\u2019s primary writers\u2014Karnatz and guitarist\/vocalist Jack Tolan.\r\n\r\n\r\n\r\n\u201cAndrew is going to be missed for sure,\u201d Karnatz said.\r\n\r\n\u201cYep, he\u2019s a phenomenal drummer,\u201d Lowenthal added.\r\n\r\n\u201cIt\u2019s changed a lot of our stuff, stylistically, and we\u2019ve re-worked a lot of songs based on his ear, his sensibilities,\u201d Karnatz explained. \u201c[In general] the lineup changes\u2014whether we like it or not\u2014 keep a fresh spin on it. It\u2019s fun to hear Andrew say, \u2018Hey, I think this part would sound better like this.\u2019 It\u2019s could be something that we may have not thought of, and going through things with a fine comb again is just good for the music.\u201d\r\n\r\n\u201cWe noticed with Phil, that teaching the body of work inevitably creates some creativity in the body of work,\u201d said Lowenthal. \u201cWe didn\u2019t want Andrew to play just like Phil and didn\u2019t want Phil to play just like Zack because all of those guys have their strong points.\u201d\r\n\r\nThe original Weapons\u2014Karnatz, Lowenthal, Tolan, and trumpeter\/vocalist\/percussionist Bobby Griffith\u2014have stayed the course together into their early thirties, carving out a niche in Jackson\u2019s music scene as one of the few units in the last decade that can play frequent free shows while also filling ticketed shows at clubs. And while the upcoming show at the Center for the Arts might be a skosh above what fans are used to paying, it\u2019s a culmination of many elements, and an opportunity to stretch out, yet again, in front of a hometown audience.\r\n\r\nThe band is not new, though, to hard work or taking on lofty goals. Similar to Phish, they\u2019ve taken-on musical costumes like Talking Heads and Paul Simon albums for special shows that are planned months in advance. The foundation of being able to pull off such challenges stems from a baseline chemistry.\r\n\r\n\u201cWe\u2019re definitely more than the sum of our parts,\u201d Lowenthal said. \u201cOur group improvisation has come a long way since 2014. I don\u2019t think we could really do that back then. Now, we can go somewhere completely different and bring it back, which is something we aspired to do in 2014 coming from a jamband mindspace, but being able to do that in a way that people enjoy, and we enjoy, has been pretty fun.\u201d\r\n\r\n\u201cIt\u2019s been huge just learning the nuances of each other\u2019s playing style over the years and lately, we\u2019ve really working hard on listening to each other and being able to pick up on subtle changes when improvising,\u201d said Karnatz. \u201cAs you grow musically and play with someone for a long time you can catch on to their tendencies or themes that are brought up in jams, and that comes from years of jamming together. We don\u2019t have a phenom with regards to having a standout individual player. We\u2019re much more of a group dynamic.\u201d\r\n\r\nThe upcoming show will feature the quintet as an acoustic unit, rearranging songs to fit the context of an unplugged vibe. That means Karnatz on grand piano, Lowenthal on upright bass, Keehn on more percussion, Tolan on acoustic guitar, and Griffith blowing horn. The second set will build by adding a horn section featuring Mike Patton on trombone, Stephen Perry on sax, along with back-up singers Bri Moore and Sheena Dinesh, and original percussionist and frequent collaborator, Gregory Meyers.\r\n\r\n\u201cIt\u2019s been really fun working this acoustic set and totally rearrange some songs in an acoustic style,\u201d Karnatz said. \u201cWe made one of our songs a bluegrass song and attacked it that way, and it\u2019s a similar challenge to adding a new member.\u201d\r\n\r\n\u201cWe didn\u2019t think [playing the Center] was attainable and we\u2019ve been throwing the idea around of an acoustic set in that room for years,\u201d Lowenthal reflected. \u201cJust having the ability to approach this takes a certain type of venue, and playing a room that sounds that good will be really rewarding.\u201d\r\n\r\n\u201cAnd a little nerve racking,\u201d laughed Karnatz.\r\n\r\nSneaky Pete & the Secret Weapons, 7 p.m. Tuesday at the Center Theater. $32. JHCenterForTheArts.org.