I started the day off posting a Wale x John Mayer joint that didn't make Attention Deficit.  The song is called "Letter" and uses a John Mayer sample.  Our good friend Rhymefest also has a song with John Mayer that was recorded year's ago at SoundScape studios.  Well, perhaps taking a cue from Wale, Fest just hit us with his version of "Letter", which also features John Mayer.  The beats are a little different as well.  It's good to point out that both Wale and Rhymefest both have close ties to Mark Ronson, who perhaps got this sample or worked with Mayer to get something for one of his artists.  This could have been originally just for Fest, sat around too long and swooped up by Wale. Get the track below.