UnScramble this Word: a k i t r e n s?

Questions

What british band is named after the inventor of the seed drill?

What British duo's works are referred to as the savoy operas?

what british glitter rocker plays on iggy pop's raw power album?

what british theatrical rocker's alter ego was the thin white duke?

what broadway production of gilbert & sullivan's did linda ronstadt star in the 80's?