Of 2006's pomade-suave So This is Goodbye — safe to say, the sexiest R&B record ever issued by two pasty dudes from Hamilton, Ontario — Junior Boys' singer Jeremy Greenspan said, "The whole album is ... my version of a contemporary take on '40s and '50s pop." Hence the seamless inclusion of "When No One Cares," a reverberating-to-eternity look at Frank Sinatra so natural and effortless it makes you wonder how the rest of Ol' Blue Eyes' catalog would fare whispered to echoing synths and click tracks. That was the duo's lone cover selection in 12 years — until last month's Big Black Coat (City Slang), whose addition to the canon sets another decade in the Boys' flawlessly combed crosshairs. It takes a little longer to place this time, but once Greenspan reaches deep at the end of the first verse ("I came back to let you know / Got a thing for you and I can't let go"), even a voracious Pac-Man synth and downtempo techno treatment can't obscure Bobby Caldwell's "What You Won't Do For Love." It's an equally apt avatar for Big Black Coat as "When No One Cares" was for So This is Goodbye: a contemporary take on the nebulous neutral ground between '70s disco and '80s house music, pulled off with a panache that, five albums in, can be taken for granted. Jessy Lanza, whose debut Pull My Hair Back was cowritten and produced by Greenspan, opens. Tickets $15.