Conversation so far:
what happened in 1987?
1987's Music for the Masses saw further alterations in the band's sound and working methods.
what were some of the alterations?
For the first time a producer not related to Mute Records, Dave Bascombe, was called to assist with the recording sessions.
what music did they make?
"Strangelove", "Never Let Me Down Again" and "Behind the Wheel.
did any of these singles chart?
performed well in countries such as Canada, Brazil, West Germany, South Africa, Sweden and Switzerland, often reaching the top 10.
did they go on tour?
The Music for the Masses Tour began 22 October 1987.

Question: what was the 101?
Self-contained rewrite: what was the 101?