======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '287'
                                          'artist'  'Over the Rhine'
                                     'text_people'  ''
                                         'release'  'Good Dog Bad Dog'
                                           'title'  'Happy to Be So'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'Q-PLAY-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-2', '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'  '11'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '97.318'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Good Dog Bad Dog'
'TBPM' (BPM (beats per minute))                     '97.318'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Happy to Be So'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Over the Rhine'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'alt country', 'alternative', 'female vocalists', 'folk']
'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'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.50 dB'
'TXXX:replaygain_track_peak'                        '0.700701'

========================== row from database ==========================
                                              'id'  242656
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Over the Rhine/Over The Rhine - Good Dog _ Bad Dog - 11 - 11.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  287
                                           'genre'  ifs-songwriter
                                        'filesize'  4595272
                                           'mtime'  1628356593
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos The _ 11 11 ifs songwriter
                                      'tag_artist'  Over the Rhine
                                     'tag_release'  Good Dog Bad Dog
                                       'tag_title'  Happy to Be So
                                             'bpm'  97.318
                                    'search_title'  'be':3 'happy':1 'so':4 'to':2
                                   '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':11 'bad':10C 'be':3A 'dog':9C 'eos':13 'good':8C 'happy':1A 'ifs':15 'over':5B 'rhine':7B 'so':4A 'songwriter':12 'the':6B,14 'to':2A
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alt country', 'alternative', 'female vocalists', 'folk']
                                        'tag_date'  2000
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1628356592.679444  (2021-08-07 19:16:32)
                             'size'  4595272