don't be, it's shite.
the 'knot' is a plastic box housing a tinny speaker, it's got a piece of string with a plastic clasp to go round your neck. it's stuck in c major, or almost d minor (missing the top d, obvs) and the response isn't great - it's not weighted or velocity sensitive or anything. no midi out, no jack, i doubt it even got reviewed in sos.
( brb Monkhouse Stampede, Fri 13 Mar 2015, 15:00, archived)

You've talked me out of it.
I'll go back to covering those keyboard guitars that were all over Top of the Pops, at one time.
( monster munch person, man, woman... camera... TV?, Fri 13 Mar 2015, 15:16, archived)