======================== unified (from filesystem) ========================
                                         'bitrate'  '108.961'
                                        'duration'  '165'
                                          'artist'  'Emry Arthur'
                                     'text_people'  ''
                                         'release'  'Appalachian Stompdown - Disc C'
                                           'title'  'The Little Black Train Is Coming'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'all', 'old little known brilliance', 'americana', 'folk']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '105.313'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Appalachian Stompdown - Disc C'
'TBPM' (BPM (beats per minute))                     '105.313'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'The Little Black Train Is Coming'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Emry Arthur'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '3'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Encoding Params'                              'vers'
'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', 'all', 'old little known brilliance', 'americana', 'folk']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.03 dB'
'TXXX:replaygain_track_peak'                        '0.451278'

========================== row from database ==========================
                                              'id'  1111208
                                            'path'  /data/Music/Bulk/00localcharacter/Appalachian Stompdown/Appalachian Stompdown - Disc C/3-07 The Little Black Train Is Comin.mp3
                                         'working'  None
                                         'bitrate'  109
                                    'duration_sec'  165
                                           'genre'  loc-namerica-country
                                        'filesize'  2257832
                                           'mtime'  1621629645
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 3 07 loc namerica country
                                      'tag_artist'  Emry Arthur
                                     'tag_release'  Appalachian Stompdown - Disc C
                                       'tag_title'  The Little Black Train Is Coming
                                             'bpm'  105.313
                                    'search_title'  'black':3 'coming':6 'is':5 'little':2 'the':1 'train':4
                                   'search_artist'  'arthur':2 'emry':1
                                  'search_release'  'appalachian':1 'c':4 'disc':3 'stompdown':2
                                     'search_rest'  '3':1 'country':4 'loc':2 'namerica':3
                                    'search_combo'  '3':13 'appalachian':9C 'arthur':8B 'black':3A 'c':12C 'coming':6A 'country':16 'disc':11C 'emry':7B 'is':5A 'little':2A 'loc':14 'namerica':15 'stompdown':10C 'the':1A 'train':4A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7B
                                           '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country', 'all', 'old little known brilliance', 'americana', 'folk']
                                        'tag_date'  2006
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621629644.841958  (2021-05-21 22:40:44)
                             'size'  2257832