This is my favorite Peter, Paul & Mary album; it's one I've listened to my whole life, many, many times. I want to respond to those reviewers who classified Big Blue Frog as a "silly children's song." I hear it as a very clear commentary on inter-racial marriage. "The neighbors are against it and it's clear to me, and it's probably clear to you -- they think value on their property will go right down, if the family next door is blue." As in The Great Mandela (an anti-war song), and I Dig Rock & Roll Music (a parody), PP&M are making a statement, as they did with many of their songs. Another reviewer said they were pop more than folk. While folk music became popular music when the album first came out, they certainly carry on the folk tradition of telling it like it is and taking a stand on issues.