Many thanks David. Nice choice of music. Looks like there's a lot of joy being shared in this practice:
A few of the many questions which come to mind upon viewing the video: How often do they practice with music on (the akidoka pictured in the video, that is), how do the aikidoka feel after they've practiced with music playing--i.e. what do they say about the quality of the practice? do beginners respond differently to music being played compared to dan level aikidoka? Is the sensei or dojocho in support of practice paired with music?
I believe it's a weekly thing. You can contact Miles Kessler Sensei (http://www.ai-ki-do.org/Dojocho/Spot.../MKessler.html
) with your other questions.