ernie harburg is yip's son and biographer. 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 first place is business about words, and one of them is that the songs, when they were written back in those days, anyhow, always had a lyricist and a composer, and neither one of them wrote the song. they both wrote the song. however, in the english language, you know, you have "this is gershwin's song," or "this is" -- they usually say the composer's song. i've rarely ever heard somebody say, "this is yip harburg's song" or "ira gershwin's song." both of them would be wrong. the fact is, two people write a song. so i'm going to talk about yip's lyrics and then lyrics in the song. now the first thing we're looking at here is an expression really of yip's philosophy and background, which he brings to writing lyrics f