Last.FM API Help!

[snippsat]

Not sure why I had to make the changes above, but it's working so I am very happy. Thanks again!

Because you(or library) use Python 2,i always write code for Python 3 if not specify that code has to be for Python 2.
If it's this library you use MusicBrainz Picard,so do it use Python 3,also a 3 :: Only tag.
Here form setup.py:

'classifiers': [
        'License :: OSI Approved :: GNU General Public License v2 or later (GPLv2+)',
        'Development Status :: 5 - Production/Stable',
        'Programming Language :: Python :: 3',
        'Programming Language :: Python :: 3 :: Only',
        'Programming Language :: Python :: 3.5',
        'Programming Language :: Python :: 3.6',
        'Operating System :: Microsoft :: Windows',
        'Operating System :: MacOS',
        'Operating System :: POSIX :: Linux',
        'Topic :: Multimedia :: Sound/Audio',
        'Topic :: Multimedia :: Sound/Audio :: Analysis'
    ]
}

If it woks then all is okay