======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '110'
                                          'artist'  'Explorer Series'
                                     'text_people'  ''
                                         'release'  'Mexico; Fiestas of Chiapas and Oaxaca'
                                           'title'  "Bats'i Son Martomail (True Song for the Churchkeeper)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['traditional', 'kabuki', 'japanese', 'adventure dot prg']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1976'
                                        'comments'  ''
                                           'genre'  'loc-samerica'
                                             'bpm'  '144.130'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Nonesuch 79732'
'TALB' (Album/Movie/Show title)                     'Mexico; Fiestas of Chiapas and Oaxaca'
'TBPM' (BPM (beats per minute))                     '144.130'
'TCON' (Content type, a.k.a. Genre)                 'loc-samerica'
'TDRC' (Recording time)                             '1976'
'TIT2' (Title/songname/content description)         "Bats'i Son Martomail (True Song for the Churchkeeper)"
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Explorer Series'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '3'
'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:lastfmtags'                                   ['traditional', 'kabuki', 'japanese', 'adventure dot prg']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.68 dB'
'TXXX:replaygain_track_peak'                        '0.645191'

========================== row from database ==========================
                                              'id'  1502404
                                            'path'  /data/Music/Bulk/00localcharacter/explorer series - mexico; fiestas of chiapas and oaxaca/03 - Bats_i Son Martomail (True Song for the Churchkeeper).mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  110
                                           'genre'  loc-samerica
                                        'filesize'  3090432
                                           'mtime'  1620531113
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter explorer series mexico; fiestas chiapas oaxaca 03 Bats_i loc samerica
                                      'tag_artist'  Explorer Series
                                     'tag_release'  Mexico; Fiestas of Chiapas and Oaxaca
                                       'tag_title'  Bats'i Son Martomail (True Song for the Churchkeeper)
                                             'bpm'  144.13
                                    'search_title'  'bats':1 'batsi':3 'churchkeeper':11,12 'for':9 'i':2 'martomail':5 'son':4 'song':8 'the':10 'true':6,7
                                   'search_artist'  'explorer':1 'series':2
                                  'search_release'  'and':6 'chiapas':5 'fiestas':3 'mexico':1,2 'oaxaca':7 'of':4
                                     'search_rest'  'bats':8 'chiapas':6 'explorer':1 'fiestas':5 'i':9 'loc':10 'mexico':3,4 'oaxaca':7 'samerica':11 'series':2
                                    'search_combo'  'and':20C 'bats':1A,29 'batsi':3A 'chiapas':19C,27 'churchkeeper':11A,12A 'explorer':13B,22 'fiestas':17C,26 'for':9A 'i':2A,30 'loc':31 'martomail':5A 'mexico':15C,16C,24,25 'oaxaca':21C,28 'of':18C 'samerica':32 'series':14B,23 'son':4A 'song':8A 'the':10A 'true':6A,7A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['traditional', 'kabuki', 'japanese', 'adventure dot prg']
                                        'tag_date'  1976
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620531113.1232498  (2021-05-09 05:31:53)
                             'size'  3090432