Born in Ireland but now Canadian citizens, the five Rovers have been together since 1968, when their kiddie folk song, The Unicorn, became a North American hit. While it was their first and last big-selling single, they have been popular Canadian TV performers ever since. Last year they made a country-flavored album that encouraged them to try this follow-up. It's nothing if not mainstream Americana, including Janis Ian and Albert Hammond's The Other Side of the Sun, Bing Crosby's 1950 tune Chattanoogie Shoe Shine Boy and Bobby Goldsboro's Me and Millie. There's also Kinky Friedman's not altogether adulatory People Who Read People Magazine ("Bless the soap opera lovers and the hometown bowling queens/ Bless everybody everywhere who's ever lost their dream/Bless all the people who read PEOPLE magazine"). That the group apparently is aiming for a middle-aged audience seems clear from Rover George Millar's tune No More Bread and Butter, about a man seeking advice on a diet from his doctor. As middle-road country-folk music with a bit of a brogue, this is not unpleasant.