The Beatles were continuing to work on the second LP September 12 1963 at EMI Studios number two. Three songs were recorded on this day: "Hole Me Tight" (see previous post), "Don't Bother Me" and "Little Child".
The basic track for "Don't Bother Me" has been captured on reel and exists on various bootlegs from years past. The first attempt is take 10 and is complete but played loosely. The next two takes break down and don't make it to the end of the song. George Harrison (the composer of the song) also lets the band know to be careful with the speed (tempo) of the song. Finally, take 13 is the one used on the commercial LP with overdubbing added.
Basically, this Harrisong can be found on the "Unsurpassed Masters" bootleg CD series: take 10 can be found on Volume 06 while 11, 12 and 13 can be found on Volume 01.