Is there a maximum amount of pages that should be added on a sitemap daily?

[mikecrib1]

I started a new music site that has a database of 8,000,000 songs and 500,000+ artists that we are cross referencing with free & legal content sources. Each song essentially has its own page. We are about to start adding links to a sitemap and wanted to find the best practices.

Should we add all 8,000,000+ links at once?

Should we add a maximum amount  a day? Maybe max 5,000?

What are the pros and cons of slowly adding the pages or adding them all at once. Any risks?

At the rate google is crawling our page  it will take 8 years to have all of our songs indexed (It would be very hard to crawl all of our songs as our system is more of an app). I wan't to play it safe and not do anything that will come off as spammy. I have been trying to find some actual evidence on what the best course of action is.

Thanks in Advance!

[irvingw]

do you have enough unique content for 8 million songs pages?

http://www.seroundtable.com/google-too-many-pages-16664.html