We admit to being a trifle disappointed the Marvel's 'Agents of SHIELD' Comic-Con 2013 poster released earlier today, but it seems the Joss Whedon-directed TV series had a much bigger surprise in store for the day. Veteran composer Bear McCreary ('The Walking Dead,' 'Battlestar Galactica') has signed on to score the 'Agents of S.H.I.E.L.D.' TV series, and revealed a bit of how Agent Coulson inspires the show's heroic theme.

Speaking to Entertainment Weekly in advance of his official Twitter announcement, McCreary revealed that he had worked extensively with series creator and pilot director Joss Whedon, utilizing a full symphony orchestra to develop a score as "heroic and, at times, quirky and offbeat" as the show's approach to its characters.

Joss and I spoke at length about the music for S.H.I.E.L.D. in particular, about the challenge of creating a score that is big enough in its orchestral presence that it feels cinematic and feels at home in the Marvel Cinematic Universe.

It also must capture the intimate human characteristics that define this series. In editorial, it became clear that simply tracking in typical big “superhero movie” music wasn’t going to work. So Joss helped guide me to find a sound that lives a little in both worlds.

Much of McCreary's other work will be represented at Comic-Con 2013 as well, including 'The Walking Dead,' 'Defiance' and a concert presentation of his score for Michael Bay Starz drama 'Black Sails,' which the composer described as "the most unusual and insane score I’ve ever written."

We'll bring you the latest from Marvel's 'Agents of S.H.I.E.L.D.' at the panel this week, and hopefully hear McCreary's composition for ourselves, but what say you? Are you excited to have such a distinguished sound to the series, as in the samples below?