Welcome to this week’s Release Round-Up, featuring a selection of the new titles available today! Al Stewart, Songs on the Radio: The Complete U.S. Singles 1974-1981 (Second Disc/Real Gone) (Amazon U.S. / Amazon U.K. / Amazon Canada / Real Gone Music) This definitive, first-ever singles collection from singer-songwriter Al Stewart brings together the A- and B-side of every single during the period in which Stewart catapulted from folk clubs to the mainstream.  Stewart bridged the gap between FM rock and AM pop on such classic tracks as “Year of the Cat,” “Carol,” “On the Border,” “Time Passages,” “Midnight…