Columbia subject headings:
Einstein, Albert, 1879-1955--Knowledge and learning--Congresses.
Music and science--Congresses.
Songs and music.
Harvard subject headings:
Einstein, Albert, 1879-1955--Knowledge--Music--Congresses.
Music and science--Congresses.
Princeton subject headings:
Einstein, Albert, 1879-1955--Congresses.
Einstein, Albert, 1879-1955--Knowledge--Music--Congresses.