ernie harburg is yip's son and biographer. he co-wrote the book who put the rainbow in the wizard of oz?: yip harburg, lyricist. i met up with ernie harburg at the new york public library for performing arts at lincoln center years ago when they are exhibiting yip harburg's work. ernie harburg took me on a tour. ernie harburg: the f first place is business about words, and one of them is t that the songs, when they were wriritten back in those days, anyhow, always h had a lyricicit ana cocomposer, and neither one of them wrwrote the song. they both wrote the song. however, in the englglish languagege, you know, you have "this is gershwin's song," or "this is" - they usually say the composerer's song. i've r rarely everer heard somebody say,, "this is yip h harburg's song" or " "ira gershwin's sonong." both of them w would be wrong. the fact i is, two people writete a song. so i i'm going to lk a about yiyip's lyrics and then lyrics in t sonong. now the e first thing we're looking at here isis an expression realllly of p's s pho