======================== unified (from filesystem) ========================
                                         'bitrate'  '183.839'
                                        'duration'  '309'
                                          'artist'  'Simon & Garfunkel'
                                     'text_people'  ''
                                         'release'  'Old Friends'
                                           'title'  'The Boxer'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['acoustic', 'rock', 'singer songwriter', 'folk', 'classic rock']"
                                     'discogstags'  "['pop', 'folk, world, & country', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '94.108'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Old Friends'
'TBPM' (BPM (beats per minute))                     '94.108'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'The Boxer'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Simon & Garfunkel'
'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'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop', 'folk, world, & country', 'folk']
'TXXX:lastfmtags'                                   ['acoustic', 'rock', 'singer songwriter', 'folk', 'classic rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.38 dB'
'TXXX:replaygain_track_peak'                        '0.536342'

========================== row from database ==========================
                                              'id'  193520
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Simon and Garfunkel/1997 - Old Friends/Volume 3/Simon & Garfunkel_Old Friends_06_The Boxer.mp3
                                         'working'  None
                                         'bitrate'  183
                                    'duration_sec'  309
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  7116387
                                           'mtime'  1621699784
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos and 1997 Volume 3 Garfunkel_Old Friends_06_The ifs songwriter folk
                                      'tag_artist'  Simon & Garfunkel
                                     'tag_release'  Old Friends
                                       'tag_title'  The Boxer
                                             'bpm'  94.108
                                    'search_title'  'boxer':2 'the':1
                                   'search_artist'  'garfunkel':2 'simon':1
                                  'search_release'  'friends':2 'old':1
                                     'search_rest'  '00singer':1 '06':11 '1997':5 '3':7 'and':4 'eos':3 'folk':14 'friends':10 'garfunkel':8 'ifs':13 'old':9 'songwriter':2 'the':12 'volume':6
                                    'search_combo'  '00singer':7 '06':17 '1997':11 '3':13 'and':10 'boxer':2A 'eos':9 'folk':20 'friends':6C,16 'garfunkel':4B,14 'ifs':19 'old':5C,15 'simon':3B 'songwriter':8 'the':1A,18 'volume':12
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['acoustic', 'rock', 'singer songwriter', 'folk', 'classic rock']
                                        'tag_date'  1997
                                     'discogstags'  ['pop', 'folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1621699784.2255127  (2021-05-22 18:09:44)
                             'size'  7116387