BABYMETAL performances overseas during the BABYMETAL World Tour 2014 and the performance at Saitama Super Arena for "Legend 2015, New Year Kitsune Festival" were featured in the Spring issue of 81 Japan Magazine, including a very long interview with BABYMETAL's producer Kobametal (read the interview here).
Scans of 81 Japan Magazine featuring BABYMETAL World Tour 2014
Scans courtesy of Rene Colorado.