My first attempts with the Double Bass
First a short riff
then with a backing track I found on you tube. ( playing the first 12 bars only as it is repeating itself)

This is an amazing instrument.
The strings are thick and hard and the fingers need to press hard and at the right height to get the right tone out.
I am having such fun to try it and am very happy when I can play/improvise with a Blues Backing track.
I will always look at Double Bass players with great admiration.
Learn something new. Try something different. Convince yourself that you have no limits. Brian Tracy