UnScramble this Word: i w e s b l a?

Questions

Category: Shades Of Red: Song appearing first on the charts in 1984, the four years later to go to #1.?

Category: Shades Of Red: This American Indian group popularized "swamp rock" in the early 1970's.?

Category: Shades Of Red: This Bing Crosby-Guy Lombardo duet was one of the best-selling songs of 1935.?

Category: Shades Of Red: This duo hit the charts with "You Don't Know" in 1988.?

Category: Shades Of Red: This group's only hit was 1970's "Games"?