No.11183349 ViewReplyOriginalReport
Shin Itagaki talksabout the Gurren-Lagann music project and describes the first ever footage for the movie:

Apparently they had the following requisites for participating on the music project:
-They are free to chose any song they want, but it must be on the OST
-They must animate from 800 to 1000 key-frames, no more no less.
-The contents of the video had to be approved by Imaishi and Nakajima

On the movie, he declares himself impressed and says the level of polish Imaishi seems to be going for. Even the scenes that are obviously “reused” from the TV show look completely different, it’s very even comparable to the improvement behind the Rebuild movies.