======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '22'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'SurviveAll MaximumProtection(SteelAndConcrete)(Short)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials;set-pl-mor'
                                             'bpm'  '120.399'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '120.399'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-commercials', 'set-pl-mor']
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'SurviveAll MaximumProtection(SteelAndConcrete)(Short)'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Mp3gain_minmax'                               '061,205'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:Sortunder'                                    'commercials'
'TXXX:other'                                        '001'
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.37 dB'
'TXXX:replaygain_track_peak'                        '0.442343'

========================== row from database ==========================
                                              'id'  958331
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/commercial_psa/SurviveAll_MaximumProtection(SteelAndConcrete)(Short)_0001.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  22
                                           'genre'  nonmusic-commercials;set-pl-mor
                                        'filesize'  354664
                                           'mtime'  1620525093
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv radio movietrailer commercial_psa SurviveAll_MaximumProtection(SteelAndConcrete)(Short)_0001 nonmusic commercials;set pl mor
                                      'tag_artist'  [unknown]
                                     'tag_release'  None
                                       'tag_title'  SurviveAll MaximumProtection(SteelAndConcrete)(Short)
                                             'bpm'  120.399
                                    'search_title'  'all':7 'and':12 'concrete':13 'concreteshort':15 'maximum':8 'maximumprotection':2 'maximumprotectionsteelandconcreteshort':5 'protection':9 'protectionsteel':11 'short':4,14 'steel':10 'steelandconcrete':3 'survive':6 'surviveall':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  
                                     'search_rest'  '0001':12,15,32,34 '00commercials':2 '0nonmusic':1 'all':24 'and':29 'commercial':6 'commercials':17,19 'concrete':30 'concreteshort':33 'maximum':25 'maximumprotection':9 'maximumprotectionsteelandconcreteshort':14 'mor':22 'movietrailer':5 'nonmusic':16 'pl':21 'protection':26 'protectionsteel':28 'psa':7 'radio':4 'set':18,20 'short':11,31 'steel':27 'steelandconcrete':10 'survive':23 'surviveall':8,13 'tv':3
                                    'search_combo'  '0001':29,32,49,51 '00commercials':19 '0nonmusic':18 'all':7A,41 'and':12A,46 'commercial':23 'commercials':34,36 'concrete':13A,47 'concreteshort':15A,50 'maximum':8A,42 'maximumprotection':2A,26 'maximumprotectionsteelandconcreteshort':5A,31 'mor':39 'movietrailer':22 'nonmusic':33 'pl':38 'protection':9A,43 'protectionsteel':11A,45 'psa':24 'radio':21 'set':35,37 'short':4A,14A,28,48 'steel':10A,44 'steelandconcrete':3A,27 'survive':6A,40 'surviveall':1A,25,30 'tv':20 'unknown':16B,17B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525093.2622738  (2021-05-09 03:51:33)
                             'size'  354664