Because “Por Una Cabeza” (1935) is still under copyright in many countries (Gardel died in 1935; copyright lasts 70–95 years depending on region), in the U.S. and EU. Proceed with caution.
Carlos Gardel's iconic 1935 tango "Por Una Cabeza" is a popular, high-energy choice for piano duets, featuring dramatic shifts between major and minor keys. Various arrangements, from intermediate to professional, offer a blend of technical challenges and melodic, dance-like rhythms for four-hand performance. Sheet Music Plus POR UNA CABEZA PIANO POR UNA CABEZA PIANO Por Una Cabeza Piano 4 Hands Pdf