Ключевые слова: acoustic, audio, black, clef, computer, concert, design, detail, electric, element, entertainment, festival, glyph, headphones, icon, illustration, isolated, item, karaoke, line, microphone, monochrome, music, musical, notes, opera, pack, party, pictogram, player, playing, record, sign, smartphone, song, sound, stereo, symbol, system, thin, treble, volume, white,