Artists are always asking us at MusicSupervisionCentral how to write music that will get their songs synched to picture. At the top of our answer, we always tell them to start by writing what they feel, since music supervisors hone in on truly authentic music for reasons that are often unexpected.
A perfect example is the use of artist Jim Bianco's track "Easy Street" for the November 6 episode of "The walking dead" on AMC. What's most interesting for songwriters to note here is that a very dark series chose a very upbeat song for juxtaposition of what was happening onscreen. The music supervisor on the show is Thomas Golubic and his excellent SuperMusicVision team (who are profiled in the upcoming second edition of the "Music Supervision" book, coming out in Q1 of 2017).
Read the full article on how the selection was made, and an iTunes chart hit happened in the process, in Xander Zellner's Billboard article.