Any piece of music with complex riffs and runs can look and sound intimidating. It doesn’t matter whether the riff and runs are Jazz, Pop or Opera; the principle for learning is the same, break it down piece by piece. First, work out the rhythm through clapping and counting, be sure to catch and review any trouble spots you might have. Secondly, play the notes from the page of music on the piano and make sure you are solid on your intervals. Lastly, combine the rhythms and pitches on the piano and sing along slowly until you feel comfortable taking it at a faster speed. It also helps to start working on the end of the riff and learn it backwards so you become more confident as you go along.