“Closing Time” guys Semisonic, led by the accomplished and wide-reaching songwriter Dan Wilson, have a pair of new songs out today — their first new music in three years. The soft-but-sprightly pop-rock tunes “Little Bit Of Sun” and “Grow Your Own” arrive ahead of a Semisonic tour with Barenaked Ladies, the archnemeses of our Number Ones column, though we used to be on friendlier terms with them. But back to Semisonic — who, yeah, we once interviewed too.