The role of instrumental albums in rock has changed quite a deal over time. While it would be unusual now to see one on the top 40 as they were in the 50’s and 60s they have not disappeared from the scene. Rather they have gone underground. Instead of being dance music as they were in the beginning of the rock era they now set moods more like pre-rock jazz combos. Bands like Mogwai and other math rock bands have also managed to make instrumental albums that captured critical attention leading to a re-examination of instrumental rock and it’s possibilities.