rock music UK /ˈɹɒk ˈmjuːzɪk/US /ˈɹɑk ˈmjuzɪk/ noun1 •A broad genre of popular music, including especially those styles ultimately derived from rock and roll, employing electrical amplification, heavy use of guitars, 4/4 time with strong percussive rhythm on beats two and four (backbeat), and usually themes of bold wildness, rebellion, and sexuality.
