The Irishmen pub in Everett  www.theirishmen.com  has a trad Irish session on Monday's from 7-10pm but heed this warning - its overflowing w/musicians 
most nights and new entrants may not be appreciated.  Grab a chair & listen !
Don't forget to invite your non musician friends down for the craic.
We're lucky in this area to have so many seisiuns available to us,
but its key that we support these businesses to ensure they keep em going.