Here's a couple short videos I have on face book runnin' my homemade tube call.
These were made years ago so don't judge my callin' too harshly plus the acoustics in my cabin are not the best.
Hope to make some new soundfiles soon
https://www.facebook.com/168676023342117/videos/168707463338973
https://www.facebook.com/watch/?v=168710976671955