Glad to be of assistance
I don't really "get" the commonly thrown around distinction between movie audio and music audio. I see it all the time where a review or forum post says that a speaker is somehow better suited to one or the other. To me, that's like saying, "these speakers are good for sound, but not for sound." Doesn't make any sense
Movies have lots of music in them. And, in fact, these days, I'd contend that movies contain the far more challenging content since they still have dynamics and large differences between loud and quiet, while so much modern music is all dynamically compressed and has no difference at all between loud and quiet! As my podcast co-host Tom Andry has pointed out, he thinks that whole phrase started because reviewers always need something nice to say about bad products. So they just throw it out there that a bad speaker isn't good enough for music, but it's fine for movies because at least you can still make out what people are saying. Well, that really isn't saying much, is it? That's just a reviewer trying not to piss off a manufacturer so that they'll continue sending them products to review!
No, a good speaker is a good speaker. And a bad speaker is a bad speaker. If a speaker isn't great for music, then it isn't somehow good for movies. I just think so many people are used to nothing but crappy built-in TV speakers that literally ANYTHING sounds like an improvement. And most people only ever watch TV shows and movies via their TV speakers. So they think a crappy speaker sounds fine for movies, but then they try it for music and it doesn't even sound as good as their crappy white earbuds, so they say, "bad for music, fine for movies". Nope. Just bad all around. Your built-in TV speakers being even worse doesn't make them "fine for movies"
Regardless, all of Ascend's speakers are good speakers. They "tell it like it is", and that goes for movies, music, TV shows, everything. The Sierra-1 offer superior clarity, transient response, and self-damping. Those things will be audible and of benefit no matter what you're listening to