Show Tunes are the songs that have been featured in musical plays and films. The songs are usually written by professional songwriters, and are sung by the original cast or by vocalists that interpret show tunes and traditional pop. Broadway musicals generate a number of different songs, preludes, interludes, postludes, and theme songs. Any musical song from a Broadway musical can be considered a show tune, specifically in reference to the memorable melody. Most of Cole Porter's songs were show tunes. Andrew Llloyd Weber's generation of hit songs are all show tunes, including songs from The Phantom of the Opera, like "Music of the Night" and "All I Ask of You."