In those days Swing Journal was reputed to have the largest circulation of any jazz magazine in the world.
Also the cover always included a headshot of one or another straight-ahead player.
I recently found an interesting cover of Swing Journal at JazzWax.Go here
At second time Sadao Watanabe(渡辺貞夫) held concert on March 15, 1969.
Sadao performed to tribute the 13th anniversary of Charlie Parker.
It was issued “SWING JOURNAL JAZZ WORKSHOP 2 SADAO WATANABE DEDICATED TO CHARLIE PARKER” by Tact label.
Here is Sadao Watanabe Plays “If I Should Lose You”.
Here is Sadao Watanabe with Modern Jazz All Stars plays “Confirmation”.
Swing Journal Jazz Workshop was a periodical jazz concert sponsored by Swing Journal Inc.
SWING JOURNAL was Japan’s foremost Jazz magazine, and published from 1947 until 2010.
SWING JOURNAL became highly influential in Japan Jazz.
So it had organised Jazz event such as Jazz Workshop and didn’t aim at profit.
In those days Swing Journal had chosen outstanding musicians every year.
They insisted on their own music and announced experiments on their stages.
At first time Terumasa Hino(日野皓正) and his all stars held concert on November 22, 1968.
Also Swing Journal Jazz Workshop had been recording by TACT JAZZ label.
Here is TERUMASA HINO(日野皓正) plays “AlONE, ALONE AND ALONE”.
Here is Great Talk Terumasa Hino Living with Jazz