How to pronounce “synthesizer”(verb) in English

box when the cop patted me down you know he probably thought we were doing drugs CU we had a long hair then and he foundthe blue box the cop said what's this I pushed two button beep beep I said it's an electronic music synthesizer the moodsynthesizer was brand new the First music synthesizer of all time it's electronic music synthesizer he says what's the orange button for Steve said