Mahler is right when he said his Symphony 3 was one the likes of which the world had never seen: it's a most unusual symphony. It's got 6 movements instead of the usual 4, plus parts for a soprano and children's choir. It's got one of the longest first movements of any symphony ever written: lasting some half an hour. Written in a small log cabin in front of the lake of Steinbach in 1895, it's suffused with the spirit and the power Nature, as inspired by Friedrich Nietzsche, the philosopher who wrote the Overman (Ubermensch)("Superman" according to some translation, a name abused by Hitler who supplied specially printed copies of extracts of Nietzsche philosophy taken out of context to ordinary German solders as part of their training) and The Gay Science (Die fröhliche Wissenschaft), was to be entitled in like the latter work and was supposed to have 7 programmatic movements as follows:
I : Pan awakens. Summer marches in.
II What the flowers in the meadow tell me.
III What the beasts of the forest tell me.
IV What the night tells me. (Alto solo.)
V What the morning bells tell me. (Women's chorus with alto solo.)
VI What love tells me.
Motto: 'Father, behold these wounds of mine! Let no creature be unredeemed!'
(from Des Knaben Wunderhorn)
VII Heavenly life [ Das himmlische Leben]. (Soprano solo, humorous)
Later, the original 7th movement became the final movement of his next symphony, the 4th and the third symphony became a 6-movement symphony.
In its present form, with the programmatic title "Sommermorgentraum" (A Summer Morning Dream", which is the only original programmatic indications, Mahler retains when the piece was first performed in 1902, its 6 movements are as follows:
I Kräftig. Entschieden (Strong and decisive) [D minor to F major]
II Tempo di Menuetto (In the tempo of a minuet) [A major]
III Comodo (Scherzando) (Comfortably, like a scherzo) [C minor to C major]
IV Sehr langsam—Misterioso (Very slowly, mysteriously) [D Major]
V Lustig im Tempo und keck im Ausdruck (Cheerful in tempo and cheeky in expression) [F major]
VI Langsam—Ruhevoll—Empfunden (Slowly, tranquil, deeply felt) [D major]
I leave it to the experts to argue out whether music can be progammatic, as if musical notes, phrases, motifs, movements could be treated as words, phrases, sentences, themes, paragraphs and essays or poems. To me, any relevant indications of what the music is "about" is of assistance in firing our own imagination and thus help us appreciate different features and aspects in the composer's music, provided one bears in mind that these are no more than hints, clues, suggestions and can never be taken literally because music is always music. It can never be replaced by words, no matter how skilfully done. Otherwise, music will have lost its raison d'ête.