======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '30'
                                          'artist'  'Kraftwerk Live in Tokyo 4 June'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Radio Add'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials;set-pl-mor'
                                             'bpm'  '115.195'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '115.195'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-commercials', 'set-pl-mor']
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Radio Add'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kraftwerk Live in Tokyo 4 June'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.43 dB'
'TXXX:replaygain_track_peak'                        '0.485191'

========================== row from database ==========================
                                              'id'  957490
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/commercial_psa/Kraftwerk - Japanese Radio Ad.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  30
                                           'genre'  nonmusic-commercials;set-pl-mor
                                        'filesize'  497482
                                           'mtime'  1620524921
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv radio movietrailer commercial_psa Japanese nonmusic commercials;set pl mor
                                      'tag_artist'  Kraftwerk Live in Tokyo 4 June
                                     'tag_release'  None
                                       'tag_title'  Radio Add
                                             'bpm'  115.195
                                    'search_title'  'add':2 'radio':1
                                   'search_artist'  '4':5 'in':3 'june':6 'kraftwerk':1 'live':2 'tokyo':4
                                  'search_release'  
                                     'search_rest'  '00commercials':2 '0nonmusic':1 'commercial':6 'commercials':10,12 'japanese':8 'mor':15 'movietrailer':5 'nonmusic':9 'pl':14 'psa':7 'radio':4 'set':11,13 'tv':3
                                    'search_combo'  '00commercials':10 '0nonmusic':9 '4':7B 'add':2A 'commercial':14 'commercials':18,20 'in':5B 'japanese':16 'june':8B 'kraftwerk':3B 'live':4B 'mor':23 'movietrailer':13 'nonmusic':17 'pl':22 'psa':15 'radio':1A,12 'set':19,21 'tokyo':6B 'tv':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524920.7137272  (2021-05-09 03:48:40)
                             'size'  497482