Listings of the music and the musician that accompanies any of Dr Joe's Meditations can be found on the Product Page for the accompanying meditation on Dr Joe's Website.
You can find the product shop here.
Open a meditation listing then scroll down the page to see the music and musician used.
See the example below for Walking Meditation 2:
Meditation Music by Barry Goldstein
Album: Walking with the Divine Music
barrygoldsteinmusic.com
This information is also listed in the My Audio Library section of your account for for each meditation purchased. See the screenshot below for an example of Walking Meditation 2.