WiseGuys has the James Blake presale code: While this limited time pre-sale offer exists, you’ll have the chance to order James Blake show tickets before the public. James Blake presale password for show tickets in Seattle, WA (The Neptune) If you don’t buy your tickets to James Blake’s performance in Seattle during the presale you might not be able to get them before they are all gone.
Here are all the James Blake performance details:

James Blake
The Neptune
Seattle, WA
Tue, Apr 23, 2013 08:00 PM

Onsale to General Public
Start: Fri, 02/01/13 10:00 AM PST

Start: Thu, 01/31/13 10:00 AM PST
End: Thu, 01/31/13 10:00 PM PST

You can use this pre-sale passwords and information to get tickets:

WiseGuys Tip: When ordering show tickets on the web, keep in mind that Best Available is not always the best choice… you may learn that “the best” is too expensive or not what you expected. I suggest selecting a price level or a seating area to limit your search.