In the early years of Mahler's conducting career, composing was a spare time activity. Between his Laibach and Olmütz appointments he worked on settings of verses by Richard Leander and Tirso de Molina, later collected as Volume I of Lieder und Gesänge ("Songs and Airs").
- Tirso de Molina is a pseudonym of Gabriel Tellez (born: 1579 in Madrid, died: 1648 in Almazan, Spain). Monk and poet.
- Richard Leander is a pseudonym of Richard von Volkmann (born: 1830 in Leipzig, died: 1889 in Jena). Surgeon and poet.
Tirso de Molina (Gabriel Tellez).
Richard Leander (Richard von Volkmann).
Five Songs for Voices and Piano (Fünf Lieder und Gesänge für eine Singstimme und Klavier, 1880-1887). Forming part I of Lieder und Gesange, entitled after Mahler's death: Lieder aus der Jugendzeit. Text: Tirso de Molina, Richard Leander and Gustav Mahler.