sequencer
Concise Oxford English Dictionary © 2008 Oxford University Press:
sequencer/ˈsiːkwənsə(r)/
▶noun
- 1 a programmable electronic device for storing sequences of musical notes, chords, or rhythms and transmitting them to an electronic musical instrument.
- 2 Biochemistry an apparatus for ascertaining the sequence of amino acids or other monomers in a biological polymer.
'sequencer' also found in these Oxford entries:

