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List of compositions by Gustav Mahler - Wikipedia
List of works by Gustav Mahler - IMSLP
Best Mahler Works: 10 Essential Pieces By The Great Composer
Gustav Mahler - Wikipedia
Complete list of music composed by Gustav Mahler - Musopen
List of Works by Gustav Mahler - Young Composers Music Forum
Catalogue of Works - Internationale Gustav Mahler Gesellschaft
Compositions - Mahler Foundation
Five essential works by Mahler - Classical Music
Gustav Mahler - chronological list of works - Tonalsoft