Traditional Pop refers to post-big band and pre-rock & roll pop music. Traditional pop drew from a repertoire of songs written by professional songwriters and were performed by a vocalist that was supported by either an orchestra or a small combo. In traditional pop, the song is the key -- although the singer is the focal point, this style of singing doesn't rely on vocal improvisations like jazz singing does. Traditional pop can also refer to the orchestra leaders and arrangers that provided the instrumental settings for vocalists.