VEDA asks What kind of music/sounds help you get work done? Well, as I work I can watch TV so I do. However there was a time I listened to a lot of Jazz, mostly the radio station Jazz 88 (WBGO http://wbgo.org/).
For my videos I make search for the right sound to go with the visuals. I use Free Music Archive.org (https://freemusicarchive.org/). This is a great source, but you have to read the fine print. Some of the music is free to use as long as it isn't for commercial purposes. There are a few other licensing to be aware of, but the data base is so large you will find something. This is a free service to join.
The other source is Epidemic Sound http://www.epidemicsound.com/, which is not free, but you are free to use the music in your videos without fear of copyright strikes. Which I have experienced.
My video is about non of that. April 12th I was still struggling what do I do what do I do? That's it a video about thinking what am I going to do.