It looks like some of their reviews are from Epinions. You might want to try them.
From what I've heard, Google's Music Search essentially uses crawled information. PR of any crawled content is a big factor, plus they have some "special sauce" in the music search algo.
The music pages that they host at Google (with album art, reviews and so on) do come from 3rd party providers - but who those providers are exactly is not publicly listed - you need to tweeze it out for yourself as best you can. Epinions sounds right to me, but I'm sure there's a lot more.
The key with promoting a musician is to do a lot on a regular basis -- a whole lot, in fact -- and then monitor results. Getting a CD sold through sites that feature "indie" or independent artists is one good step I've used.
Google blog post says you can use this form [google.com] to request submission into the music search index.
[edited by: lawman at 5:18 pm (utc) on Feb. 10, 2006]
Here's another way, get your artist signed up at CDbaby. Derek Siver's outfit will then get the music distributed through outfits such as itunes, rhapsody, napster etc. Then track listings from your artist's releases should start showing up in google's music search engine:
".....(If you have other ideas for promoting musicians online, let me know. She has a website and a blog and a MySpace site.)...."
Sonicbids is another company I see in Boston that is always a part of the indie scene. Looks like they have a lot links to festivals, and allow you to have an online Press Kit.
If you just want her name out and aren't concerned with her first CD being "out there" for free. I would seed it on a bunch of the well known torrent sites.
To get people finding it. when you seed it, in the torrent description put the names of more well known artists that are of the same genre so that when someone searches "A famous singer" they may find your friend and request her album.
If they like it you will get some word of mouth spread, not to mention her band name being indexed on top torrent sites along with other artists may have her her name come higher in some SERPs.
Just a thought
also, Usenet is a great place to put albums, I've discovered quite a few new bands through their albums being availible on Usenet
If your friend is RIAA/BMI/ASSSSSCAP free, then you may want to go for big play at music.podshow.com. I'm in contact with a lot of artists who have had huge conversion sales/play etc...
Podshow, has been meeting with Google over the last several months. Google will be taking their music in the near future I believe once Podshow gets their purchasing system up within a few weeks.
CDBaby is a good second option.
Hope that helps...
(If you have other ideas for promoting musicians online, let me know. She has a website and a blog and a MySpace site.)
Artistopia is another option.
P2P Networks are a fantastic way for new artists to be heard.
You could release a few songs on file sharing networks using names of popular songs that artist is influenced by.
If you want a more robust solution I may be able to help.