Recently, Frankie and Teddy showed off their singing chops at Dog Park. Muzzy, who has only once before burst into song, is mostly a spoiler here.
(It's a rough edit. Every time I played the clip, Muzzy would fret and circle the room, so no fine-tuning.)
(Also, remember that if annoying and inappropriate ads pop up in the bottom of the clip as it plays, you can click the bottom right corner to stop them.) Enjoy. -z