I posit that Glee is a fantasy television series, in that it can be fruitfully evaluated using a focus on its non-mimetic narrative style to both comment on the traditions of the musical genre (especially the Hollywood Musical) but also in discussing “Music as Magic” and the way that said magic can be transformative, liberating, and revelatory.
From the ubiquitous piano player — “He’s always just around” to the fact that in Glee, seemingly everyone can instantly learn arrangements and choreagraphy and the elaborate fantasy sequences which bleed in and out of the diegesis, we have what could be described by some as Slipstream, some as Urban Fantasy, and possibly even Magical Realism (though less so on that one, given what I see as a lack of a definitive tie to the fairly culturally-specific tradition of Magical Realism).
Why does this matter?
1) If Glee is a fantasy series, then the places/times when it diverts from realism can be seen not as a violation of believability inspiring a rolling of the eyes, but a demonstration of the times when life is not enough and extra-normal storytelling is required. This brings back my beloved Etienne Decroux quote:
“One must have something to say. Art is first of all a complaint. One who is happy with things as they are has no business being on the stage.” — Etienne Decroux
And to paraphrase my former professor John Schmor, Musicals are a complaint that life should be more marvelous — why don’t we just burst into song when mere speech can no longer contain our emotional intensity?
2) It allows Glee to be more easily analyzed in the context of other SF/F musicals such as Buffy the Vampire Slayer’s “Once More With Feeling,” Fringe’s “Brown Betty” and so on.
3) It allows the use of the scholarship regarding the metaphors of the Fantastic to be applied t the series. It also enables scholars to bring to bear Samuel R. Delany’s notion of SF/F as a literature that allows for the “literalization of the metaphor” — music is soul-healing, music is empowering, music enables people to express themselves in ways they had previously/traditionally not been able.
These are merely preliminary thoughts. Look for more in time, as I believe this approach is the one which allows me to most effectively analyze the series.