Superscope Technologies cd player, cd players, dvd recorder, burn cd, burning cd, cd audio, cd burner, cd burners, cd cassette, cd creator, cd disc, cd electronics, cd pioneer, cd portable, cd radio, cd recorder, cd with, digital recorders, dvd burners, dvd recorders, mp3 recorder, audio recorder, audio recorders, audio recording, audio CD recorder, cassette recorders, music education, music teachers, musicians, educators, choral, chorus, band, directors, band directors, choral directors, choir, choirs, music schools, schools, music education technology, Marantz Pro, Marantz PMD620, PMD620, PMD 620, Marantz Handheld Recorder, Marantz Handheld, Marantz PMD620, Marantz PMD 620 Superscope makes music practice tools and the popular PSD340 CD recording system, used by musicians and music educators. You can change the key and tempo of any CD, create practice loops, and even reduce lead vocals at the touch of a button with these portable recorders. Superscope also sells the popular Marantz Pro PMD620 Handheld Field Recorder.