Richie I made an inventory of the 83 Carpenter entries and summarised them as follows. I was going to send this by pm, but my password is not what I thought it was and Joe hasn't got back to me yet. So in case this is of any use I'll post it here.
It's unclear from the index whether James/Jas Mason was just a misreading of James Masson, or is separate.
Mick
Carpenter Child 4 - List of Performers:
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Format Types
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music - Music only
musicText - Music and Text
musicTextFrag - Music and Fragmentary Text
musicSML - Music single line melody
musicSMLText - Music single line melody with words
audio - Audio record or cylinder
text - Text only
textFrag - Fragmentary text only
Performer List
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James Christie (audio, mslt, msltf)
Peter Christie (audio, musicSML, musicSMLText, musicText, text)
Mrs James Christie (audio, musicSMLText, musicText, text)
William Hands (musicSMLText, musicText, text)
William Hands/Loud Mouth Singer (audio)
Mrs Becky F Jones (*USA*) (text)
(Professor) Madison, G.R (*USA*) (text, textFrag)
James Mason (x1) (audio)
Jas Mason (x1) (musicSMLText)
James Masson (musicSML, musicSMLText, musicText, text)
William Newman (text)
Mrs Sarah Phelps (musicSMLText, musicText, text)
John Sutherland (audio, musicSMLText, musicText, text)
James York (*USA*) (text)
William Butler (musicSMLText, musicTextFrag)
Wm Butler (musicSML)
*Not Given* (musicSMLText, text)
No Definite Id
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Butler? (audio)
Man Singer/William Butler? (audio)
Woman Singer/Sarah Phelps? (audio)
Loud-Mouth Singer near Evesham (audio)
Man Singer near Bampton in the Bush (audio)