======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '321'
                                          'artist'  'Over the Rhine'
                                     'text_people'  ''
                                         'release'  'Good Dog Bad Dog'
                                           'title'  'Go Down Easy'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'alt country', 'alternative', 'female vocalists', 'folk']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '144.028'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Good Dog Bad Dog'
'TBPM' (BPM (beats per minute))                     '144.028'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Go Down Easy'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Over the Rhine'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'alt country', 'alternative', 'female vocalists', 'folk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.88 dB'
'TXXX:replaygain_track_peak'                        '0.679328'

========================== row from database ==========================
                                              'id'  240291
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Over the Rhine/Over The Rhine - Good Dog _ Bad Dog - 12 - 12.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  321
                                           'genre'  ifs-songwriter
                                        'filesize'  5158508
                                           'mtime'  1628356593
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos The _ 12 12 ifs songwriter
                                      'tag_artist'  Over the Rhine
                                     'tag_release'  Good Dog Bad Dog
                                       'tag_title'  Go Down Easy
                                             'bpm'  144.028
                                    'search_title'  'down':2 'easy':3 'go':1
                                   'search_artist'  'over':1 'rhine':3 'the':2
                                  'search_release'  'bad':3 'dog':2 'good':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':5 'songwriter':2 'the':4
                                    'search_combo'  '00singer':10 'bad':9C 'dog':8C 'down':2A 'easy':3A 'eos':12 'go':1A 'good':7C 'ifs':14 'over':4B 'rhine':6B 'songwriter':11 'the':5B,13
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alt country', 'alternative', 'female vocalists', 'folk']
                                        'tag_date'  2000
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1628356592.6927474  (2021-08-07 19:16:32)
                             'size'  5158508