The most fundamental problem with the music in the movie is....
The singing all sounds too perfect! Not saying I like these new versions, but they are all sang too well on a technical level. The reason the original has lasted so long is because of the character that each actor put into their singing! Not their skill level as a vocal performer.
-"Sci fi double feature" is sang slightly off key at times and uses unique and strange pronunciation and cadence. not a perfect, clear, smooth voice.
-Brad sounds like such a dork and has personality in his lyrics, not auditioning for broadway.
-Riff speaks slooow and menacing with screeching high vocals, not like a professional rock star.
-Janet sounds like she is going to come at any minute during "touch-a", not yet another perfect poppy performance.
I will say as much as I disagree with fake frank's casting at least she tries to channel the character, same with fake columbia. How much you wanna bet that rocky, a newborn idiot, also has a flawless singing voice? Fact is, sometimes perfection sounds like crap.
And don't give me any "oh well now they can sound more blah blah blah". It's void of all character, love, personality and only serves to insult the 40 year legacy Richard O'Brien's music has had.
*beep* this remake and *beep* you if you are naive and dumb enough to swallow this tripe and wash it down with some kool-aid.