Can listening to music really improve depression and mood?

Absolutely. Music therapy may aid in relaxation and decreased anxiety. It may also help a person with anxiety and trouble with sleep onset be able to get proper rest. Proper rest and decrease in anxiety symptoms will aid depression. Also, with depression treatment, you should make time for yourself to do enjoyable activities, such as music, if you like it.
Music. Soothing sounds in general do, especially when u r relaxed or meditating & the music is soft and low in intensity.