"Oblivion" is a hauntingly beautiful instrumental piece by Astor Piazzolla played on the traditional Argentine instrument, bandoneon. The piece conveys a deep sense of longing and pain through a mournful melody that gradually builds in intensity. The combination of rich textures and emotive harmonies perfectly captures the bittersweet nature of memories and the struggle to let go of the past. Overall, this powerful and evocative tribute to the human experience of loss and sorrow is a must-listen for anyone seeking a moving musical experience.