Seattle alt-country songwriter Charlie Smyth has made his new album, “Leaves,” available for free download at CharlieSmythMusic.com. “Leaves” is pensive, spare, beautiful, emotive and distinctively American. It’s a lovely work from the softer end of the alt.honky.tonk continuum. It’s mostly Smyth’s voice with an acoustic guitar, punctuated here and there by drum, bass and piano. …