I may be painting a bullet on my head, but oh well (take this as an opinion, I don't mind at all if you like Tangled, Frozen or whatever). Besides being too early with too few reviews, Tangled too was compared it to the likes of Little Mermaid and Beauty and the Beast and given extreme hype by critics that it didn't come close to meeting (not a bad movie, just not great or as good as the pre-2000's Disney animation).
That being said, this movie has begun to interest me story-wise, after being incredibly turned off by early trailers (though AGAIN I was also suckered up similarly to Tangled right before it was released, despite also being turned off from early previews of it). While my interest has been somewhat piqued, I can't help but feel this is going to be Tangled disappointment 2.0. Nothing would give me greater happiness than to be wrong when I finally watch it though. I will give the movie a chance to wow me, but i'm keeping expectations at rock bottom after the crap Disney has pulled in recent years. IMO, the best Disney movie (non Pixar) under Iger's reign was actually Meet the Robinsons (followed by Wreck it Ralph and Princess and the Frog, Tangled doesn't even touch any three of those IMO).
Song wise though, i'm not at all impressed with Let it Go. The very beginning isn't bad (I was actually kind of digging that part), but the chorus is quite bad to be honest. I've listened to it twice and I definitely can't say i'm a fan at all. And I think it's absurd comparing it to the absolute brilliance of Beauty and the Beast's score, really now (the Carnival of the Animals Aquarium inspired prologue theme, Be Our Guest, Tale as Old as Time, Bonjour, Gaston, Something There, the Mob Song)... I'd even rather listen to the songs in Princess and the Frog (and I usually HATE Randy Newman's music with few exceptions). The music in Tangled was pretty meh and forgettable, but nothing in it i'd call actually bad. But if this is the best Frozen has to offer, then i'm going to have to hope the story and characters are enough to keep me involved. I much prefer Enchanted of all movies as a Disney musical (and i'd personally say that despite being a sort of live action satire of the princess movie genre, it was ironically the best princess movies Disney has made since the early 90s IMHO).