Béla Bartók composed his First Violin Concerto (1907-08) as a private love token for Geyer; it remained unperformed publicly during her lifetime association.
Between 1907 and 1908, the young Hungarian composer Béla Bartók fell deeply in love with the violinist Stefi Geyer, then in her late teens and already an accomplished performer. Bartók composed his Violin Concerto No. 1 as an intensely personal declaration, encoding a four-note motif representing Geyer's musical and personal ideal, a theme that musicologists now refer to as the 'Stefi Geyer chord'.
Geyer received the manuscript as a gift, but the romantic relationship between the two ended before the concerto received a public premiere. Bartók withdrew the work, and it remained unpublished and unperformed in public during the composer's lifetime; Geyer kept the manuscript for decades. It was only after both Bartók's death and eventually Geyer's own later years that the concerto was rediscovered among her papers and given its posthumous public premiere in 1958, performed by Hansheinz Schneeberger.
This episode is historically significant not merely as a biographical footnote but because the melodic motif Bartók created for Geyer reappears transformed throughout his subsequent oeuvre, including the Two Portraits (1911) and elements later revisited in his mature style. Geyer's role as muse and custodian of this unpublished manuscript makes her an important, if often underappreciated, figure in the history of twentieth-century composition, illustrating how a female performer's personal and artistic relationship with a composer could directly shape the evolution of modernist musical language.