Get a NSString with current song's title and artist

gistfile1.m

-(NSString *) currentSong {
    NSString *retVal = nil;

    MPMusicPlayerController* iPodMusicPlayer = [MPMusicPlayerController iPodMusicPlayer];
    MPMediaItem *mediaItem = [iPodMusicPlayer nowPlayingItem];
    if (mediaItem) {
        NSString *artist = [mediaItem valueForProperty: MPMediaItemPropertyArtist];
        NSString *song = [mediaItem valueForProperty: MPMediaItemPropertyTitle];

        retVal = [NSString stringWithFormat:@"NLT: %@ - %@", song, artist];   
    }

    return retVal;
}