Top this, YT treasure-hunters: a video of Jimmy Page, at the age of 14, playing in a skiffle band! (Link courtesy Metafilter)
At around 2 minutes into the video (2:15, I think), the kid introduces himself as "James Page" and expresses his interest in doing "biological research" and admits to not having the brains to be a doctor.
A *lousy* rendition of "Cotton Fields" can be seen and heard in the second half of the video, with Little James Page whistling in harmony.
This kid would go on to play "Black Dog"?
Look here, I too was in a band that played a *lousy* cover of "Cotton Fields" and I too did not have the brains to be a doctor....never mind, here's the video.