The Boston Symphony will give the fourth pair of concerts of its regular series in Symphony Hall on Friday afternoon and Saturday evening. Dr. Koussevitsky is to conduct the first Boston performance of the orchestral suite from Stravinsky's ballet, "Le Baiser de la Fee", which was written in 1928. The ballet bears the subtitle, "Inspired by the Muse of Tchaikovsky", and makes free use of that composer's themes. It seems rather incongruous that the neo-classic Stravinsky and the romantic Tchaikovsky should be thus combined, especially since the former has written: "I always aim at straight forward expression in its simplest form. I have no use for 'working-out' in dramatic or lyric music."

Also on the program is Dvorak's Violin Concerto with Ruth Posselt, a local artist who has been acquiring quite a reputation, as soloist. The closing number will be Schumann's Fourth Symphony in D minor, composed in 1841 and revised and renumbered in 1851.

Dr. Nikolai Sokoloff, national director of the Federal Music Project, is to conduct an augmented orchestra of 125 WPA musicians in the Opera House on Sunday evening. The program consists of Weber's Overture to "Euryanthe", Brahms's first Symphony, Loeffler's "Pagan Poem" with Heinrich Gebhard, pianist, as soloist, Romheld's Minuet, and the "Sailors' Dance" from "The Red Poppy" by Gliere. While the concert may not have the technical finish of some of those given by our established orchestra, it does nevertheless merit attention.