member to contribute a song. Use in Friends "Smelly Cat" is one of several songs Phoebe writes and performs on Friends. Debuting in "The One with the Baby on the Bus", Phoebe first mentions the song to Rachel Green (Aniston) in conversation. The song is initially established as Phoebe's least popular among audiences. In the episode, Stephanie struggles to play "Smelly Cat" to Phoebe's liking, with Phoebe advising the character to work on feeling the song's lyrics. "Smelly Cat" proved popular and would continue to make several appearances throughout Friends' ten seasons, primarily via various performances and renditions by Phoebe. Although originally intended to be a one-time joke, the writers continued to conceive ways of incorporating the song into the series, creating various storylines that revolve around "Smelly Cat". I'll Be There for You: The One about Friends author Kelsey Miller confirmed that the composition was used most frequently during the show's second season, with Phoebe singing it at Central Perk regularly. The song would become one of the show's most used running gags.The song appears in season two's "The One Where Eddie Moves In", in which Phoebe attempts to record a professional rendition of the song in a recording studio. She struggles to record with background singers. Phoebe eventually films a music video for the song, for which her voice is ultimately dubbed by a professional singer, voiced by E. G. Daily. Phoebe initially believes she is hearing herself sing and thinks she sounds good. Upon learning the truth, Phoebe ultimately feels sorry for the anonymous singer instead of pitying herself. The song is then heard in season three's "The One with Phoebe's Ex-Partner", in which Leslie (again portrayed by Daily), a singer with whom Phoebe used to perform, suggests that "Smelly Cat" be adapted into a jingle for a cat litter commercial. Phoebe ultimately refuses the offer, but Leslie sells the song without Phoebe's permission, prompting her to write "Jingle Bitch" about Leslie. The product is named "Smelly Cat" Kitty Litter, after the song. Phoebe performs the song as a duet with Rob, portrayed by musician Chris Isaak, although Phoebe criticizes his rendition, suggesting that the singer refrain from incorporating his signature high-pitched yodeling in favor of "a more masculine note". Phoebe also leads her friends in a sing-along version of "Smelly Cat" at Central Perk, each of whom contribute a solo, except Ross Geller (Schwimmer) because there