Following the struggle of his last two albums Bowie looked to take the pressure of expectation from his shoulders by forming Tin Machine, a straight up rock band that would allow him to be part of a unit rather than having to release a new album as a solo artist.
'Tin Machine', the band's eponymous debut was a straightforward rock affair while their follow up 'Tin Machine II' was a bit heavier and more industrial.
Largely the quality of the albums can be gauged by the amount of effort that went into the album titles.
'Goodbye Mr. Ed' is quite interesting. Bowie formed a song around a series of warm up and tuning exercises the band did before recording.