Symphony No. 4 is the fourth symphony by Austrian composer Gustav Mahler, completed in 1900. Musically it blends late-Romantic orchestral colour and lyrical warmth with relatively transparent, chamber-like textures and classical formal clarity, occupies a transitional place in Mahler's output between his earlier large-scale symphonies and the more austere works that followed, and concludes with a brief vocal movement presenting a childlike vision.