One year on from the sad passing of former THRESHOLD vocalist Andrew 'Mac' McDermott, the UK progressive metallers have uploaded some previously unseen footage of one of Mac's last performances with the band as a tribute to him. Recorded at the Z7 in Switzerland, you can now watch THRESHOLD perform a storming version of “Mission Profile” during the Subsurface tour of 2004. Check it out: http://youtu.be/DndUsf_PmkI THRESHOLD’s new album “March of Progress” will be released on 24 August (EU), 27 August (UK), 11 September (US) through Nuclear Blast Records.