For those looking for high-quality PDF or sheet music versions, the following are the primary arrangements used by professionals:
The intersection of American neo-Romanticism and the "King of Instruments" creates a sonic landscape unlike any other. When musicians search for they are looking for more than just notes on a page; they are seeking to translate one of the most emotionally potent orchestral works of the 20th century onto an instrument capable of sustaining its infinite sorrow. Barber Adagio For Strings Organ Pdf
If you are looking for sheet music in PDF format specifically for the organ, several versions are commonly used: William Strickland Arrangement : This is the authoritative transcription published by G. Schirmer, Inc. For those looking for high-quality PDF or sheet
Legally? No. The work is under copyright until at least 2031 (Life + 70 years in the US). You can find public domain string scores (arranged for organ by amateurs) on IMSLP, but these are often riddled with errors. The definitive Strickland edition is paid. Schirmer, Inc
Some PDFs available are direct note-for-note transcriptions of the orchestral score. In these versions: