Yamada (Kosaku, a.k.a. Kósçak) was an important Japanese conductor who introduced many modern orchestral works to Japan. He composed over 700 art-songs (Lieder) and the most famous Japanese opera, Kurofune. He also wrote symphonies, string quartets, and other chamber and vocal works.
Ysaÿe (Théophile) was a Belgian pianist who composed a great deal of "impressionist" music, including symphonies, concertos, orchestral and chamber music, and a Requiem. Much if it remains unpublished. The picture is actually of his brother Eugène, one of the most celebrated violinists of the early 20th century and a composer himself.