======================== unified (from filesystem) ========================
                                         'bitrate'  '253.804'
                                        'duration'  '229'
                                          'artist'  'Cat Power'
                                     'text_people'  ''
                                         'release'  'You Are Free'
                                           'title'  "Keep On Runnin'"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '94.813'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'You Are Free'
'TBPM' (BPM (beats per minute))                     '94.813'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         "Keep On Runnin'"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Cat Power'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'female vocalists', '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'                        '+1.17 dB'
'TXXX:replaygain_track_peak'                        '0.599466'

========================== row from database ==========================
                                              'id'  1520870
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Cat Power/You Are Free/13-Keep_On_Runnin_.mp3
                                         'working'  None
                                         'bitrate'  253
                                    'duration_sec'  229
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  7286340
                                           'mtime'  1620645122
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 13 Keep_On_Runnin_ ifs songwriter eos
                                      'tag_artist'  Cat Power
                                     'tag_release'  You Are Free
                                       'tag_title'  Keep On Runnin'
                                             'bpm'  94.813
                                    'search_title'  'keep':1 'on':2 'runnin':3,4
                                   'search_artist'  'cat':1 'power':2
                                  'search_release'  'are':2 'free':3 'you':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':7 'keep':4 'on':5 'runnin':6 'songwriter':2
                                    'search_combo'  '00singer':10 'are':8C 'cat':5B 'eos':12 'free':9C 'ifs':16 'keep':1A,13 'on':2A,14 'power':6B 'runnin':3A,4A,15 'songwriter':11 'you':7C
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  8A
                                           '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-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1620645121.9661303  (2021-05-10 13:12:01)
                             'size'  7286340