Yesterday a lucky patron of Rough Trade East found a second mystery single from Boards of Canada, and today we awoke to find that NPR and BBC Radio 1 have aired two more snippets.

Zane Lowe aired the following clip on his BBC Radio 1 show last night, which revealed the number '519225':

Then later in the evening NPR streamed another snippet (number: 699742) at the end of their All Songs Considered show (listen here).

This leaves us with the following code: '—— / —— / 717228 / 936557 / ——/ 519225' (nobody seems to know where '699742' fits in the sequence). [via Pitchfork]