Hi,
I work with a number of people in the music industry providing these services. I can source 50k across Aus, UK, US, Cad and France. You would also receive a minimum of 300 comments and 2,000 subscribers to the channel.
I am also able to keyword target the video which generally results in a page 3 hit within 6 weeks.
Does the client have a Vevo channel? I can source one for them if needed.
Usually when doing this, youtube itself is not enough, you need to manage it across instagram, sound cloud, twitter and facebook otherwise it looks a bit skewed. Whilst doing this your client may want to think about building their twitter following - I can competition target against their nearest artists (obviously not one already on your book).
I work on a confidential basis and make it look natural. Clients are across the world and you will have heard of most of them, this included producers, DJ's and artists themselves as well as clients that are being pushed for a talent show.
I am not cheap but can manage all of this in the background. I don't make guarantees in terms artists getting signed or going to number 1 as this is dependant on a number of factors such as their look / music / who is around at the time / time to market.
Ta