======================== unified (from filesystem) ========================
                                         'bitrate'  '153.814'
                                        'duration'  '233'
                                          'artist'  'The Low Anthem'
                                     'text_people'  ''
                                         'release'  'Smart Flesh'
                                           'title'  'Matter of Time'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'acoustic', 'indie folk', 'americana', 'folk']"
                                     'discogstags'  "['folk, world, & country', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-americana'
                                             'bpm'  '135.546'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Smart Flesh'
'TBPM' (BPM (beats per minute))                     '135.546'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-americana'
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'Matter of Time'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Low Anthem'
'TPE2' (Band/orchestra/accompaniment)               'The Low Anthem'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['folk, world, & country', 'folk']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'indie folk', 'americana', 'folk']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                        '+1.10 dB'
'TXXX:replaygain_track_peak'                        '0.563625'

========================== row from database ==========================
                                              'id'  1266343
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/the low anthem - smart flesh (2011) v2/05 matter of time.mp3
                                         'working'  None
                                         'bitrate'  153
                                    'duration_sec'  233
                                           'genre'  ifs-songwriter-americana
                                        'filesize'  4493860
                                           'mtime'  1628355676
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos low anthem smart flesh (2011) v2 05 matter time ifs songwriter americana
                                      'tag_artist'  The Low Anthem
                                     'tag_release'  Smart Flesh
                                       'tag_title'  Matter of Time
                                             'bpm'  135.546
                                    'search_title'  'matter':1 'of':2 'time':3
                                   'search_artist'  'anthem':3 'low':2 'the':1
                                  'search_release'  'flesh':2 'smart':1
                                     'search_rest'  '00singer':1 '2011':8,9 'americana':14 'anthem':5 'eos':3 'flesh':7 'ifs':13 'low':4 'matter':11 'smart':6 'songwriter':2 'time':12 'v2':10
                                    'search_combo'  '00singer':9 '2011':16,17 'americana':22 'anthem':6B,13 'eos':11 'flesh':8C,15 'ifs':21 'low':5B,12 'matter':1A,19 'of':2A 'smart':7C,14 'songwriter':10 'the':4B 'time':3A,20 'v2':18
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'indie folk', 'americana', 'folk']
                                        'tag_date'  2011
                                     'discogstags'  ['folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1628355675.881589  (2021-08-07 19:01:15)
                             'size'  4493860