A nightingale is in the lyrics. Dietrich Fischer-Dieskau and Elizabeth Schwarzkopf with George Szell conducting the London Symphony Orchestra. This song is quoted extensively in his First Symphony.
That one always gives me a shiver . . . "Da ist mein Haus, von grünem Rasen - that is my house, (under) the green turf", and you'll join me there within the year . . . < shudder >
another of Mahler's ghosts . . .