On their new EP, Comma, Dublin’s Tandem Felix have toned down the gritty anxiety that added a particularly distorted, glitching atmosphere to their 2013 EP, Popcorn. That grit, which gave Tandem Felix’s folkier basis a very psychedelic edge, has been twisted slightly to incorporate less abrasion and a little more lap steel guitar. The result is that Comma’s five tracks bear a lot of similarity to the likes of Beck’s Sea Change or Morning Phase, or to the more tender points in Wilco’s discography.  That’s not to say that the anxiety is gone, however. The lyrics express the same sense of…