Yes, i agree, covers are always something strange, personally i prefer original songs of an artist than covers. By the way, Peter is different , because in S.M.B. he transoforms songs by others, in a gabrielian-way very cute and fashinating, i think this

Caste, i understand what you mean, i think in "Street spirit", the gabrielian-touch ( i call it so

) can't raise the song, so the result is too much sadness, maybe that's why after many listens i do not like too much.
P.s. hope you understand my bad english. .
