Well, one of them at least. But who needs more than “Smelly Cat”? Every true “Friends” fan knows all the words.
In her Reddit AMA, Kudrow revealed that the “Friends” writers wrote the lyrics to “Smelly Cat,” and she wrote the tune with a little help from Chrissie Hynde. “She was amazing,” she said. “Phoebe's song lyrics were not ad libbed,” she added. “The writers wrote them. And I got to come up with the tunes.”
“Smelly Cat”’s place as a cultural touchstone was well and truly cemented when Kudrow performed it on stage with Taylor Swift. But when asked to name her favorite song from Phoebe’s extensive back catalog, Kudrow chose something different.
“They all actually make me laugh really hard, somebody put them all together on YouTube, because I'd forgotten all the songs, and every time a new one came on, I laughed out loud, but I really liked the one for the kids, that starts "Oh the cow in the meadow goes moo..." she revealed. (It’s in Season 2, Episode 12 — The One After The Superbowl, Part 1 — in case you want to remind yourself of its brilliance.)