======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '331'
                                          'artist'  'Bob Dylan'
                                     'text_people'  'Bob Dylan'
                                         'release'  'Highway 61 Revisited'
                                           'title'  'Queen Jane Approximately'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', 'Q-JZFKS-1', "
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                                      'lastfmtags'  "['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'blues rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '102.905'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Highway 61 Revisited'
'TBPM' (BPM (beats per minute))                     '102.905'
'TCOM' (Composer)                                   'Bob Dylan'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Queen Jane Approximately'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Dylan'
'TPE2' (Band/orchestra/accompaniment)               'Bob Dylan'
'TPUB' (Publisher)                                  'Espresso'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'blues rock', 'folk rock']
'TXXX:lastfmtags'                                   ['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.58 dB'
'TXXX:replaygain_track_peak'                        '0.335893'

========================== row from database ==========================
                                              'id'  1422442
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bob Dylan/1965 - Highway 61 Revisited/06 Queen Jane Approximately.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  331
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  7964351
                                           'mtime'  1636400723
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1965 06 ifs songwriter folk
                                      'tag_artist'  Bob Dylan
                                     'tag_release'  Highway 61 Revisited
                                       'tag_title'  Queen Jane Approximately
                                             'bpm'  102.905
                                    'search_title'  'approximately':3 'jane':2 'queen':1
                                   'search_artist'  'bob':1 'dylan':2
                                  'search_release'  '61':2 'highway':1 'revisited':3
                                     'search_rest'  '00singer':1 '1965':4 'eos':3 'folk':6 'ifs':5 'songwriter':2
                                    'search_combo'  '00singer':9 '1965':12 '61':7C 'approximately':3A 'bob':4B 'dylan':5B 'eos':11 'folk':14 'highway':6C 'ifs':13 'jane':2A 'queen':1A 'revisited':8C 'songwriter':10
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']
                                        'tag_date'  1965
                                     'discogstags'  ['rock', 'blues rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1636400722.5533266  (2021-11-08 20:45:22)
                             'size'  7964351