Huh I must've missed that along the way. Lanois sang the song? Was it like a full song and did anyone ever like record it?
Lanois co-wrote Thank You with Bono and just did it in a couple of concerts; no proper studio recording or anything. I'm not sure if it was a full song really, or if he just played it as a bit of a "maxi-snippet". I think there was a bootleg of him playing it though.