Brahms wrote a number of major works for orchestra , including two serenades , four symphonies , two piano concertos ( No. 1 in D minor ; No. 2 in B-flat major ) , a Violin Concerto , a Double Concerto for violin and cello , and two companion orchestral overtures , the Academic Festival Overture and the Tragic Overture .
He wrote four symphonies , four concertos , a requiem , piano music , chamber music and songs .