This is a 'Pseudo Song' that was made up to describe the mostly Accapella section of improvised blues orientated vocal and guitar call and response between Robert and Jimmy during performances of How Many More Times during the latter half of 69 through the final show at Madison Square Garden on September 19th 1970, where How Many More Times was a surprise inclusion to the setlist as an encore.
I mapped out the song's beginning as the part where Robert says "See a little girl walking down the street..." Between this opening line and when the band comes back in it would usually run about 30-45 seconds worth of improvisiation. I couldn't find any songs that matched the lyrics close enough so I felt that I needed to create the Pseudo Song of 'Accapella Blues Improvisation'.
Sometimes, during this imrpovisation Plant would sing sections of other known songs such as 'Cocaine Blues' or 'I Think You Need A Shot'. In these instances I annoted the performances of these songs as sub medley songs within this particular medley song.