If anyone is interested, I've posted scanned copies of the first seven issues of this magazine on the Yamaha Musicians forum. As far as I can tell, these are not available anywhere else online. I have the originals and plan to put them up for sale.
You can check them out here: https://yamahamusicians.com/forum/viewtopic.php?p=130742#p130742
You can check them out here: https://yamahamusicians.com/forum/viewtopic.php?p=130742#p130742
