<P> Lynn Thomson was a dramaturg who was hired by New York Theatre Workshop to help rework Rent . She claimed that between early May and the end of October 1995 , she and Larson co-wrote a `` new version '' of the musical . She sued the Larson estate for $40 million USD and sought 16 % of the show 's royalties , claiming she had written a significant portion of the lyrics and the libretto of the `` new version '' of Rent . </P>
what is the written dialogue portion of a musical called
libretto