The E Street Band’s Little Steven van Zandt loves the Connection, a garage punk outfit out of New Hampshire that regularly wins his “the coolest song in the world” competition. Given van Zandt’s love for retro rock, you can see why he’d like the Connection. Last year’s Let it Rock! is a terrific collection of Beatles and Stones-inspired tunes that show off the songwriting chops of band leaders Brad Marino and Geoff Palmer, two thirtysomethings whose deep friendship comes across in the songs’ vibrant energy. Tonight’s show is a warm-up as the band plays Public Hall tomorrow night as part of the Rock and Roll Hall of Fame and Museum’s big Spring Benefit concert featuring Hall & Oates.