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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def metrolyrics(song):
 """ Returns the lyrics found in metrolyrics for the specified mp3 file or an empty string if not found. """

    translate = {URLESCAPE: '', ' ': '-'}
    title = song.title.lower()
    title = normalize(title, translate)
    title = re.sub(r'\-{2,}', '-', title)
    artist = song.artist.lower()
    artist = normalize(artist, translate)
    artist = re.sub(r'\-{2,}', '-', artist)

    url = 'http://www.metrolyrics.com/{}-lyrics-{}.html'.format(title, artist)
    soup = get_url(url)
    body = soup.find(id='lyrics-body-text')
    if body is None:
        return ''

    text = ''
    verses = body.find_all('p')
    for verse in verses:
        text += verse.get_text().strip()
        text += '\n\n'

    return text.strip()