for me its different ... urm -

beginner -
romance de amore
you and me - lifehouse
you're beautiful - james blunt
smells like teen spirit - nirvana
i caught fire in your eyes - the used

party -
knockin' on heavens door - GNR
sweet child o' mine -GNR
dont cry - GNR
love is only a feeling - darkness

advanced -
paradise city - GNR
rock and roll hoochie koo - edgar winter, rick derringer
you could be mine - GNR

mostly alot of GNR songs are advanced except for afew that i dono