Here is a little snippet from that article:
Intubated individuals who listened to slow-tempo music had fewer days of delirium and were more awake than their peers who did not, according to a recent pilot study. The researchers are seeking an alternative to sedative drugs to improve outcomes in these patients.
Study participants were placed in three groups, listening either to slow-tempo music (60 to 80 beats per minute), music of their own preference as chosen by surrogates, or audiobook recordings. The therapy was provided twice daily via headphones.