Music recognition service application

Hi there,

It may seems to be somewhat weird question becouse it doesnt directly regrading iphone development.
so here i go...
Ive done some research about music recognition services offering servers to resolve fingerprints and metadata of given query.
I've digged into musicIp and graceNote, and some way understood their visions and functions.
My question is, can some one experienced with interaction with those organizations can refer me to resources regarding the usage of their services within iphone apps? i have good experience with iphone development, and want to use music recognition service within my app.
Hope that the terms and factors involved in that industry as i already noticed with my hambe understanding, will help anyone.
will appreciate any help...:)