Schweiger, Daniel (May 24, 2016). "Interview with Alex Heffes". Film Music Magazine. Archived from the original on September 27, 2016. Retrieved September 27, 2016.
Schweiger, Daniel (May 24, 2016). "Interview with Alex Heffes". Film Music Magazine. Archived from the original on September 27, 2016. Retrieved September 27, 2016.