Here's why they call the little one a jingle and the big one the blues

Martin is talking about writing jingles as he and molly are composing one Martin and Molly compose a jingle about eggs. Martin talks about what he does when he's stuck composing. Martin prods Molly to sing the jingle to Davy. She reads it to him. Davy gives his commentary. Martin and Molly walk around the city and talk. They hear a jingle they've written and dance. Martin approaches Molly and she gives him a ""let's be friends"" speech. They get on the Staten Island Ferry. Molly and her mother meet for lunch at a place with a WWII theme. Molly finds out that her mother was engaged to someone before Molly's father. Fred shows up. He invites Molly to a gig the group is putting on the next night, at which he's planning to play some of the planetarium music. Molly and Martin walk by as Fred is playing in an alley outside the club where he's playing. Martin goes in to get a table. Molly and Fred talk; he reminisces about their relationship. Molly goes into the club. Fred and the guys play. Fr