gistfile1.m

//Create an instance of MPMusicPlayerController 
MPMusicPlayerController* myPlayer = [MPMusicPlayerController iPodMusicPlayer]; 

//Create a query that will return all songs by The Beatles grouped by album 
MPMediaQuery* query = [MPMediaQuery songsQuery]; 
[query addFilterPredicate:[MPMediaPropertyPredicate predicateWithValue:@"The Beatles" forProperty:MPMediaItemPropertyArtist comparisonType:MPMediaPredicateComparisonEqualTo]]; 
[query setGroupingType:MPMediaGroupingAlbum]; 

//Pass the query to the player 
[myPlayer setQueueWithQuery:query]; 

//Start playing and set a label text to the name and image to the cover art of the song that is playing 
[myPlayer play]; 
someLabel.text = [myPlayer.nowPlayingItem valueForProperty:MPMediaItemPropertyTitle]; 
someImageView.image = [myPlayer.nowPlayingItem valueForProperty:MPMediaItemPropertyArtwork];