Sorry, but this post gets a lot of things very wrong. A sequencer is definitely not used for anything similar to "automating tape loops". For Kraftwerk they we

Sorry, but this post gets a lot of things very wrong. A sequencer is definitely not used for anything similar to "automating tape loops". For Kraftwerk they were used mainly in the studio to created drum sequences and melodies that were much more precise than those played by the band. The whole point of the sequencer was to replace Karl Bartos and Wolfgang Flür, and maybe some bass lines or melodies played by Ralf with a robotic sound. Programming a sequence in an analog sequencer like a Synthanorma is way harder than changing a tape. Have you ever programmed one? Back then you didn't have presets or pitch quantization, so for melodies for example you'd have to tune each step by ear. Drum loops were easier but not as easy as changing a tape. Using them on the road was much harder than using tapes. In fact, even several years later, bands like Depeche Mode were still taking tapes to the road because sequencers were still clunky and difficult to program live. It was only after the advent of preset programming this started to change. Before Autobahn, Kraftwerk indeed experimented with tape loops, but for very different kinds of sounds, more of the Stockhausen variety. The things that led to this experiment with synthesizers and sequencers were the primitive rhythm machines of the time (they were already going in this direction with songs like Tanzmusik, but they wanted with custom drum sounds and custom drum rhythms, not the Samba and Cha-Cha-Cha of the Maestro) and their use of echo in "Ralf und Florian", where the echo was used to get a perfect repetition of something played (not a loop though, since it's not something that is "left alone" like a sequencer or a tape). And by "two step sequencers" the parent poster clearly means "two units". Also, it's called Synthanorma, not Synthorama.