About: http://webisa.webdatacommons.org/376396906

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Through the use of a plurality of such systems as in FIG. 1, the invention would also enable a single depression of the trigger pushbutton to sound several musical tones simultaneously, thus allowing for the production of chords.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca