[taylorlb]

While it would have been nice for Glee to acknowledge Jonathan's influence, an arranger can only claim copyright when the original songwriter has granted that privilege to said arranger, which I don't believe was the case when Coulton recorded his cover.

[dahart]

You don't believe it was the case, or you're speculating?

"Back when I released it, I bought the statutory license to distribute my version of this song through Harry Fox."

[taylorlb]

Speculating... but a statutory license is not equal to a copyright in this case.