======================== unified (from filesystem) ========================
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                                        'duration'  '176'
                                          'artist'  'Grant Brothers & Their Music'
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                                         'release'  'Good for What Ails You: Music of the Medicine Shows, 1926-1937 - Disk1'
                                           'title'  'Tell It to Me'
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 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
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                                      'lastfmtags'  ("['americana', 'male vocalist', 'folk and folk plus', 'what shall we do "
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                                     'discogstags'  "['country', 'folk, world, & country', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '110.724'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '110.724'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Tell It to Me'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Grant Brothers & Their Music'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['country', 'folk, world, & country', 'pop']
'TXXX:lastfmtags'                                   ['americana',
 'male vocalist',
 'folk and folk plus',
 'what shall we do without us',
 'folk']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.67 dB'
'TXXX:replaygain_track_peak'                        '0.549271'

========================== row from database ==========================
                                              'id'  670620
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Good for What Ails You Music of the Medicine Shows, 1926-1937 - Disk1/14 - Grant Brothers & Their Music - Tell It to Me.mp3
                                         'working'  None
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                                    'duration_sec'  176
                                           'genre'  loc-namerica-country
                                        'filesize'  7085232
                                           'mtime'  1621627982
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 14 loc namerica country
                                      'tag_artist'  Grant Brothers & Their Music
                                     'tag_release'  Good for What Ails You: Music of the Medicine Shows, 1926-1937 - Disk1
                                       'tag_title'  Tell It to Me
                                             'bpm'  110.724
                                    'search_title'  'it':2 'me':4 'tell':1 'to':3
                                   'search_artist'  'brothers':2 'grant':1 'music':4 'their':3
                                  'search_release'  '1926':13 '19261937':15 '1937':14 'ails':4 'disk1':16 'for':2 'good':1 'medicine':10 'music':7 'of':8 'shows':11,12 'the':9 'what':3 'you':5,6
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'loc':5 'namerica':6 'oldies':3
                                    'search_combo'  '1926':21C '19261937':23C '1937':22C 'ails':12C 'brothers':6B 'country':28 'disk1':24C 'exotica':26 'for':10C 'good':9C 'grant':5B 'it':2A 'jazz':25 'loc':29 'me':4A 'medicine':18C 'music':8B,15C 'namerica':30 'of':16C 'oldies':27 'shows':19C,20C 'tell':1A 'the':17C 'their':7B 'to':3A 'what':11C 'you':13C,14C
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['americana', 'male vocalist', 'folk and folk plus', 'what shall we do without us', 'folk']
                                        'tag_date'  2005
                                     'discogstags'  ['country', 'folk, world, & country', 'pop']

============================== file details ==============================
                                           'mtime'  1621627982.209002  (2021-05-21 22:13:02)
                             'size'  7085232