While full digital "paper" (sheet music scores) for this specific vintage track is not widely available on standard commercial platforms, you can find related materials through the following:
Watch a live performance and hear the tropical rhythms of Los Sonors: Los Sonor’s en La Feria de Cali 1975 – Música Tropical musicadechavorrucos TikTok• Aug 10, 2025
El viejito by Sonor's (Album): Reviews, Ratings, Credits, Song list
: El Viejito , which includes other popular tracks such as "El Caiman," "Vagabundo," and "El Ratón".