Gustav Mahler's Symphony No. 4 in G major is one of the most popular and recognizable works in the classical music repertoire. The symphony is a cornerstone of Mahler's oeuvre, showcasing his mastery of orchestration, harmony, and thematic development. This paper will provide an overview of the symphony, its historical context, and a critical analysis of the 2003 performance by the San Francisco Symphony, conducted by Michael Tilson Thomas.