Friends TV series Who wrote Phoebe's songs

Who wrote Phoebe's songs?

The lyrics were most likely written by the team of screenwriters who worked on the show, but that's just my guess. I don't think you will be able to get an unequivocal answer without actually asking someone on the show as there doesn't seem to be any information about it online and I can't remember hearing or seeing anything about that Footage "behind the scenes" or in the interviews that come with the DVD box set. The fact that most of the songs are about, or at least related to, things that happen in the episodes in which they are performed reinforces this theory.

In the DVD extras, however, it is mentioned that the melodies and chords are all or at least partially made by Lisa Kudrow.


TO UPDATE

After digging a bit, I found these two Friends CDs:

Album: friends
Snowman / Ashes / Medley of the dead mother

Lyrics by Adam Chase (Friends Producer / Writer) , Ira Ungerleider (Friends Producer / Writer)
Music by Lisa Kudrow

Album: Friends - again
Smelly cat

Written by Adam Chase, Betsy Borns (Writer of friends) , Chrissy Hynde, Lisa Kudrow


The song credits posted above prove that the producers / writers of Friends were the ones who wrote Phoebe Buffay's songs, with the exception of "Smelly Cat," for which Lisa Kudrow and Chrissy Hynde (front woman of The Pretenders) were at least partially responsible seem to be for.

Sure, that's only two songs, but I don't see any reason why the rest would be any different.