======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '179'
                                          'artist'  'Red Sovine'
                                     'text_people'  'Red Sovine'
                                         'release'  'Phantom 309'
                                           'title'  'Sad Violins'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['classic country', 'spoken word', 'country', 'honky tonk', 'country and "
 "western', 'rockabilly']")
                                     'discogstags'  "['folk, world, & country', 'country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '129.979'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Phantom 309'
'TBPM' (BPM (beats per minute))                     '129.979'
'TCOM' (Composer)                                   'Red Sovine'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'Sad Violins'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Red Sovine'
'TPE2' (Band/orchestra/accompaniment)               'Red Sovine'
'TPUB' (Publisher)                                  'Hollywood'
'TRCK' (Track number/Position in set)               '6'
'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', 'country']
'TXXX:lastfmtags'                                   ['classic country',
 'spoken word',
 'country',
 'honky tonk',
 'country and western',
 'rockabilly']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.19 dB'
'TXXX:replaygain_track_peak'                        '0.637162'

========================== row from database ==========================
                                              'id'  959908
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Phantom 309 [Gusto] 1968/06 Sad Violins.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  179
                                           'genre'  loc-namerica-country
                                        'filesize'  3602766
                                           'mtime'  1621628364
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country [Gusto] 1968 06 loc namerica country
                                      'tag_artist'  Red Sovine
                                     'tag_release'  Phantom 309
                                       'tag_title'  Sad Violins
                                             'bpm'  129.979
                                    'search_title'  'sad':1 'violins':2
                                   'search_artist'  'red':1 'sovine':2
                                  'search_release'  '309':2 'phantom':1
                                     'search_rest'  '1968':7 'country':4 'exotica':2 'gusto':5,6 'jazz':1 'loc':8 'namerica':9 'oldies':3
                                    'search_combo'  '1968':13 '309':6C 'country':10 'exotica':8 'gusto':11,12 'jazz':7 'loc':14 'namerica':15 'oldies':9 'phantom':5C 'red':3B 'sad':1A 'sovine':4B 'violins':2A
                                    'tag_tracknum'  6
                                      '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-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic country', 'spoken word', 'country', 'honky tonk', 'country and western', 'rockabilly']
                                        'tag_date'  1987
                                     'discogstags'  ['folk, world, & country', 'country']

============================== file details ==============================
                                           'mtime'  1621628364.3787603  (2021-05-21 22:19:24)
                             'size'  3602766