This link should take you to Amazon web page. If you click the "listen to samples" button it should give you a list.

http://www.amazon.com/Boyfriend-Highlights-Original-London-Recording/dp/B000000KB7/ref=sr_1_1/103-7782258-9900648?ie=UTF8&s=music&qid=1175094282&sr=1-1

Linda sings:-

Perfect Young Ladies

Won't You Charlston With Me

Safety In Numbers

She can also be heard in most of the other songs with the rest of the cast as chorus.