I've got everything Virgil Fox ever produced (Fox being the single most prolific and talented concert organist of the 20th century), and just about everything E. Power Biggs released. I also prize my collection of Alexander Schreiner, the 25-year organist at the Mormon Tabernacle.
I also have an extensive collection of George Wright, Dick Leibert (the long-serving organist at Radio City Music Hall), and Simon Gledhill, a British organist who is likely the most versatile living theatre organist.
There is simply nothing like pipes and power!
The lovely and talented Zamfir, Master of the Pan Flute, agrees. He recently released a collection of Metallica cover tunes.
And that should be "recordable".