I don't think that music will help it rank any but using copywrited music will get it pulled fast, usually within hours or a day and then your video is gone.
I know I speak for many, many others out there that using the wrong music on a video will turn off potential customers fast and might turn them off towards your company as well like using that crap rap or whatever it is when you are dealing with corp. people, homeowners or most people in general that don't listen to that junk, it is like listening to the worst noise you have heard and you expect to get customers to think that junk is cool and like your video? ? ? Not.
Somtimes it is better to not have music because you don't know what people like (you are not psychic or one of those fake tv psychics) so you don't know what music people will like so either narrarate it, put some soft music so it does not annoy them or just words on the screen for them to read.
Trying to think you are entertaining them might backfire so it is better to play it safe and not try to offend people even though you might like the music you are trying to push off onto people, not all people think like you do or like what you like, we are all different and that is what makes the Great USA a great place to live.
I have only made one video but could not decide what music to put on it so I just left it alone (I think some music would have made it better but could not decide on something and the few ideas I had the music was copywrited so I finally decided not to have any music) and the video has done ok, got a lot of views on it even though it is the noise of the pressure washer, it shows the cleaning happening in front of them and I have picked up some accounts from it. That video is in the posts with my signature, should be in this post also.
There is so much conflicting info out there on how to make your video rank higher, a lot of people out there contradict each other so it is hard to know who to listen to and who to believe. I don't know who really knows their stuff out there so I thought I would just do what I thought would be good and I got lucky and people have seen the video and some have said they like it so that is great, thank you guys.
