They are impressive only in comparison to a) other kids their age who have not somehow been encouraged to become a full-time touring band by hipster stage parents, and b) their least-inspired adult contemporaries. At their best, the Tiny Masters provide self-conscious kiddy variations on vaguely arty strains of punk and alt-rock, but there is very little practical use for this music besides causing adults to go, "awww, cute!" The lyrics are predictably banal and laughable, the vocals are uniformly flat and insecure. The melodies are not bad, but they are simplistic and mostly have the irritating cadences of playground chants and jingles. (Truly, much of the album sounds like a series of homemade Mountain Dew ads.)
This work may be "pretty good for their age," but that's about it. It does not matter how old the authors may be-- this is very shallow, unengaging music, and it is hard to imagine anyone truly caring about any of these songs.
And it's hard for me to imagine how this review is worth anyone taking seriously. The beauty of this album is that it is kids being kids making music that appeals to them produced on garageband, no less - not by slick producers. How DIY is that? Put down the self-righteous pen, pitchfork, and let them be kids.