What weather is jazz? (I do not hear you ask). http://jazzandrain.com has one answer: rain. Choose volume of rain and whether to accompany it with piano jazz or vocal or saxophone.
You can vary the volume level of the rain, and choose to accompany it with piano, saxophone, vocal or swing jazz – to “increase focus, help with sleep, block distractions, stress relief”.
Then there is the “epic music” level which is recommended for the opposite: working out, staying awake or Game Play mode, to play in the background while electronic gaming. Although I have also heard of some families where Scrabble is played so competitively that perhaps the “Epic Music” would be the right level for board games in some households.