blade blue cut cutter Instument knife object office paper plastic student study tool xmascomp02 aerophone band band-instrument bell blow blowing blown brass brass-instument buttons embouchure finger-buttons fingering fingers hand hold holding hook instrument instrumentalist jazz lip-movement lipping lips loud metal mouthpiece music musical-instrument orchestral-instrument playing slide slide-ring tones tonguing trumpet tube tuning-slide valve-keys valves wind-instrument Kerala song stings Sweet Moments violin