Obviously the right song, music, or sounds can get you in the mood to anything. Whether it's to tackle your to-do list or to meditate, we all like certain types of music for different reasons. Have you ever wondered why/
There are many sounds on YouTube for just this reason.
I watch/listen frequently
Lets get a good list together of the different types of waves and what they are good for:
Alpha waves: sleep
Theta waves: studying
I'll edit this post as we add things.