Given the question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. The Amazing ZigZag Concert - The Amazing Zig Zag Concert was a rock concert held at The Roundhouse on 28 April 1974 to celebrate the fifth anniversary of Zig Zag Magazine. Described as one of the gigs of the decade the concert has taken on legendary proportions over the years and featured Michael Nesmith with Red Rhodes John Stewart Help Yourself Chilli Willi and the Red Hot Peppers and Starry Eyed and Laughing. The concert was recorded but was not issued until 2010 when it was released as a 5-CD box set.
The answer is:
Album