======================== unified (from filesystem) ========================
                                         'bitrate'  '64.0'
                                        'duration'  '167'
                                          'artist'  "Molly O'Day"
                                     'text_people'  ''
                                         'release'  'The History of Country & Western Music Vol.11'
                                           'title'  'The Tramp on the Street'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-1', 'q-chart-2', 'q-drums-1', 'q-other-2', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-3']")
                                      'lastfmtags'  "['country', 'bluegrass', 'all', 'female voices']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '20'
                                            'date'  '1946'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '142.5'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '142.5'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1946'
'TENC' (Encoded by)                                 'iTunes 10.6.3'
'TIT2' (Title/songname/content description)         'The Tramp on the Street'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               "Molly O'Day"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '11/20'
'TRCK' (Track number/Position in set)               '11/20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['country', 'bluegrass', 'all', 'female voices']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.43 dB'
'TXXX:replaygain_track_peak'                        '0.406138'

========================== row from database ==========================
                                              'id'  1498401
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Vol 11/11. Molly O_Day - The Tramp on the Street.mp3
                                         'working'  None
                                         'bitrate'  64
                                    'duration_sec'  167
                                           'genre'  loc-namerica-country
                                        'filesize'  1341198
                                           'mtime'  1621628455
                                   'redo_metaread'  0
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                                      'tag_artist'  Molly O'Day
                                     'tag_release'  The History of Country & Western Music Vol.11
                                       'tag_title'  The Tramp on the Street
                                             'bpm'  142.5
                                    'search_title'  'on':3 'street':4 'the':1 'tramp':2
                                   'search_artist'  'day':3 'molly':1 'o':2 'oday':4
                                  'search_release'  '11':8 'country':4 'history':2 'music':6 'of':3 'the':1 'vol':7 'vol11':9 'western':5
                                     'search_rest'  '11':5,6 'country':4 'day':8 'exotica':2 'jazz':1 'loc':9 'namerica':10 'o':7 'oldies':3
                                    'search_combo'  '11':16C,22,23 'country':12C,21 'day':7B,25 'exotica':19 'history':10C 'jazz':18 'loc':26 'molly':5B 'music':14C 'namerica':27 'o':6B,24 'oday':8B 'of':11C 'oldies':20 'on':3A 'street':4A 'the':1A,9C 'tramp':2A 'vol':15C 'vol11':17C 'western':13C
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country', 'bluegrass', 'all', 'female voices']
                                        'tag_date'  1946
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621628454.8173969  (2021-05-21 22:20:54)
                             'size'  1341198