. . "The Happy Song"@en . "The Happy Song is a song that was sung by Dora and Boots in the episode The Happy Old Troll."@en . . "122"^^ . "2007-09-11"^^ . . "The Happy Song is the 22nd episode in Season 1 (U.K.). Warren tries to sing, but it turns out that he sings horrible."@en . . . "The Happy Song is a song that was sung by Dora and Boots in the episode The Happy Old Troll."@en . . "22"^^ . "The Happy Song is the 22nd episode in Season 1 (U.K.). Warren tries to sing, but it turns out that he sings horrible."@en . . . . "The Happy Song"@en .