Fig. 1From: Music to improve sleep quality in adults with depression-related insomnia (MUSTAFI): study protocol for a randomized controlled trialSelected solution-enabling music listening. A sound pillow is a pillow with small internal speakers. The sound pillow features a port through which to connect a player (Mp3/iPad/mobile phone). The user selects the music on the player. (Photo courtesy of Sound Oasis)Back to article page