2013 Grand National to modifications made for the previous year's race, Aintree announced that a number of further changes had been made for the 2013 National. Twelve of the 16 fences on the course were rebuilt with the timber frames within them replaced by a softer material known as "plastic birch". The fences are still covered with at least 14 inches of spruce and will remain the same height. The starting line was also moved 90 yards closer to the first fence, further away from the spectators' stands and thereby reducing slightly the overall distance. Aintree and the Professional Jockeys' Association jointly issued
The Times They Are a-Changin' (album) "The 50th Anniversary Collection". Another session was held the following day, October 24. Master takes of "The Times They Are a-Changin'" and "One Too Many Mornings" were recorded and later included in the final album sequence. A master take for "Lay Down Your Weary Tune" was also recorded, but ultimately left out of the final album; it was eventually released on "Biograph". Two more outtakes, "Eternal Circle" and "Suze (The Cough Song)", were later issued on "The Bootleg Series Volumes 1-3 (Rare & Unreleased) 1961-1991". A final outtake, "New Orleans Rag", was released in 2013 on "The 50th Anniversary Collection".