It was originally recorded on a cassette tape and then digitized and tweaked by some friends at American Gramaphone.
Marilyn recorded this and I didn't attend as I was trying to catch up planting corn. It is likely one of the biggest mistakes of my life to not have witnessed this in person
Turn up your volume and especially the bass on your speakers, click on link and sit back and enjoy. They cut the applause short at the end but it went on for some time. The organ was in the balcony of a large cathederal and at the end of the recording, you can her professor encouraging her to take another bow.
The Hendrickson Opus 78 Organ Used In This Recording
St Joseph Cathedral, Sioux Falls, SD
Click this link: