One spinner (rotary encoder found on games like Tempest or Arkanoid)
And yet the daily experience of working in Smalltalk is still dominated by a metaphor that has barely changed in forty years: the four-pane System Browser. It’s brilliant at providing context. It’s also the start of a wider UX problem.
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Манчестер Юнайтед
Each track is linked to an instrument and you can switch between tracks at will. However, you'll first need to unlock additional tracks. If you play a sequence of notes (i.e. phrases) without a mistake, you'll activate one. As long as a track is active, it will sip away some of your energy. If that drops too low and you make an error, all the activated tracks will be disabled and you'll need to gradually unlock them again.