In the end, it was all fairly comfortable.
Taking part in a Radio 1 Live Lounge session, the band confidently breezed through material from their number one album.
As is now Live Lounge tradition, alt-J were invited to perform a cover. The trio opted for Disclosure's smash hit single 'Latch', adding a new veneer of frailty to the production.
Check it out now.
Just for reference sake... here's the original.
Photo Credit: Gabriel Green