The device used to absorb sound in music recordings is called an acoustic panel or sound absorber. These panels are designed to reduce reflections and echoes in recording environments, creating a more controlled sound that enhances audio quality. They are typically made from materials like foam or fiberglass and can be strategically placed in studios, practice rooms, and other spaces to improve sound clarity. Proper sound treatment is crucial for achieving professional-quality recordings, as it allows for a cleaner sound by minimizing noise interference and providing better acoustics for musicians and vocalists.