Arp & Sequencer
The Grandmother’s Arp/Seq controls occupy the vertical sliver of yellow along the left-hand side. Here, you can switch between the arpeggiator and a 256-note sequencer. A threeposition switch is used to toggle between the arpeggiator and the sequencer record modes. The arpeggiator is standard stuff – switch it on, hold down a fistful of notes, and the Grandmother will dutifully play them back in the order in which they were played. You can also choose forward/backward or random play. You can elect to play only the notes played, or repeat an octave higher or one octave higher and then two octaves higher. The sequencer mode allows for more complex passages. Up to three sequences may be stored in memory (retained between power cycles). It’s strictly a step sequencer – no real time recording – with notes entered from the keyboard itself. Rests, ties, and accents are entered using the three buttons above the pitch and mode wheels. Recorded sequences can be latched and transposed on the fly by pressing any key. The toggle switch used for selecting the arpeggiator’s octave is also used to select which of the three stored sequences is played.