Due to
this trade, Joshua is going to be singing for a few minutes from the top of the Cathedral before he loses his voice. Nill's at the library at this time, so he's really singing this song just for her, but it can be heard for blocks, and pretty much he'll have his wings spread out and be glowing like those darned Apostles tend to.
He's not as good as Azmaria, but an Apostle is an Apostle, and it ought to sound just loverly ignoring the anime english dub, please God. You can choose to acknowledge it or ignore it--that's completely your call! The tune is up to your imagination, but this song is the song just for him and his sister--
None sing so wildly well as the angel Israfel. And the giddy stars, so legend tells, ceasing their hymns, attend the spell of his voice, all mute. Tottering above in her highest noon, the enamored moon blushes with love.
Yes, Heaven is thine, but this is a world of sweets and sours. Our flowers are merely flowers, and the shadow of thy perfect bliss is the sunshine of ours.
At that point, he'd lose his voice and disappear back inside.