I think the talisman says "勅令: 陏身保命", which would be something like "Edict: Guard Life". Seems to be a standard writing for a jiāngshī talisman, for the cadaver to be the xiān's bodyguard.

OHHHHHH. 歌 can mean poetry too! And I was thinking "reciting a song" sounded off (but still digestible). So that's what it is! So, Kasen here is actually saying at the end – "How about we recite some poetry together tonight?"