The Importance of Single Tracks in Rock Guitar

Even big album acts were still working mostly in ways that allowed themselves to be looked at through the lens of single tracks. Even with Led Zeppelin, who never released singles at all, there are tracks that might as well have been singles. It's hard to pick one track from Trout Mask Replica by Captain Beefheart or Astral Weeks by Van Morrison. Those two albums need considering as albums rather than as individual tracks.