Ключевые слова: abstract, amplifier, analyzer, audio, background, bar, black, blue, club, color, colorful, design, diagram, digital, disco, display, electronic, energy, equalizer, equipment, frequency, graph, graphic, illustration, light, line, meter, mixer, modern, music, musical, pattern, player, radio, rainbow, record, recorder, reflection, sound, soundtrack, spectrum, stereo, studio, technology, track, voice, volume, wave, waveform,