======================== unified (from filesystem) ========================
                                         'bitrate'  '213.358'
                                        'duration'  '384'
                                          'artist'  'Philip Glass'
                                     'text_people'  ''
                                         'release'  'Glassworks'
                                           'title'  'Opening'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-vocals-1', 'q-mixbeat-1', "
 "'Q-PIANO-4']")
                                      'lastfmtags'  ("['instrumental', 'classical', 'contemporary classical', 'soundtrack', "
 "'minimalism', 'piano']")
                                     'discogstags'  "['classical', 'post-modern', 'contemporary']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1982'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments-contemporary;electronic'
                                             'bpm'  '93.2'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Glassworks'
'TBPM' (BPM (beats per minute))                     '93.2'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-classical or classical instruments-contemporary', 'electronic']
'TDRC' (Recording time)                             '1982'
'TIT2' (Title/songname/content description)         'Opening'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Philip Glass'
'TRCK' (Track number/Position in set)               '1'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME v3.97 (beta)'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['classical', 'post-modern', 'contemporary']
'TXXX:lastfmtags'                                   ['instrumental',
 'classical',
 'contemporary classical',
 'soundtrack',
 'minimalism',
 'piano']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.52 dB'
'TXXX:replaygain_track_peak'                        '0.714389'

========================== row from database ==========================
                                              'id'  1214076
                                            'path'  /data/Music/Bulk/00instruments-classical/Philip Glass/Philip Glass - Glassworks (Expanded)/01 - Opening.mp3
                                         'working'  None
                                         'bitrate'  213
                                    'duration_sec'  384
                                           'genre'  prerock-classical or classical instruments-contemporary;electronic
                                        'filesize'  10268658
                                           'mtime'  1637329803
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical (Expanded) 01 prerock classical classical instruments contemporary;electronic
                                      'tag_artist'  Philip Glass
                                     'tag_release'  Glassworks
                                       'tag_title'  Opening
                                             'bpm'  93.2
                                    'search_title'  'opening':1
                                   'search_artist'  'glass':2 'philip':1
                                  'search_release'  'glassworks':1
                                     'search_rest'  '00instruments':1 'classical':2 'contemporary':7,9 'electronic':8,10 'expanded':3,4 'instruments':6 'prerock':5
                                    'search_combo'  '00instruments':5 'classical':6 'contemporary':11,13 'electronic':12,14 'expanded':7,8 'glass':3B 'glassworks':4C 'instruments':10 'opening':1A 'philip':2B 'prerock':9
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'classical', 'contemporary classical', 'soundtrack', 'minimalism', 'piano']
                                        'tag_date'  1982
                                     'discogstags'  ['classical', 'post-modern', 'contemporary']

============================== file details ==============================
                                           'mtime'  1637329803.3364356  (2021-11-19 14:50:03)
                             'size'  10268658