I use earbuds. In combination with "Tangerine" mac app. Generates playlists based on bpm and can set patterns. Start at 120 bpm and peak at 180 bpm then back to 120 at end of ride. = 60 rpm-90 rpm. Helps me pace. Also listen to audiobooks and catch up on the news. Soothing and helps pass the miles. YMMV