echo sounding devices; electronic effect pedals and switches for use with sound amplifiers, namely, wah-wah pedals, chorus and flange pedals, impression and gate pedals, delay and reverb pedals, overdrive pedals, envelope and synth pedals, equalization pedals, foot switches, routers and expression pedals, multi-effect pedals and pedal boards, octave and pitch shift pedals, phrase and looping pedals, tremolo and vibrato pedals, and volume pedals

Amplifiers, Speaker Enclosures and [Public Address Systems], [ Comprising ] Electronically Operated Amplifiers, [Speakers and Microphones]

ELECTRICAL CARTRIDGE-TYPE HEATING ELEMENTS

ENTERTAINMENT SERVICES, NAMELY, LIVE PERFORMANCES BY A MUSICAL GROUP