======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '289'
                                          'artist'  'Bachman-Turner Overdrive'
                                     'text_people'  ''
                                         'release'  'Guitar Rock: 1974-1975'
                                           'title'  "Takin' Care of Business"
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  ("['canadian', 'bachman turner overdrive', '70s', 'rock', 'hard rock', "
 "'classic rock']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '17'
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '130.314'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Guitar Rock: 1974-1975'
'TBPM' (BPM (beats per minute))                     '130.314'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         "Takin' Care of Business"
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bachman-Turner Overdrive'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Time-Life Music'
'TRCK' (Track number/Position in set)               '11/17'
'TSOP' (Performer sort order)                       'Bachman-Turner Overdrive'
'TXXX:ALBUMARTISTSORT'                              'Various Artists'
'TXXX:ASIN'                                         'B0009T017Y'
'TXXX:CATALOGNUMBER'                                'R968-01'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '705672b2-42e2-482b-a43c-4b64b7728ec1'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '7a3b3f80-04b8-4968-b432-fbcd3f350716'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['canadian',
 'bachman turner overdrive',
 '70s',
 'rock',
 'hard rock',
 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.86 dB'
'TXXX:replaygain_track_peak'                        '0.604567'

========================== row from database ==========================
                                              'id'  1514219
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Bachman-Turner Overdrive - Takin_ Care of Business - Guitar Rock 1974-1975.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  289
                                           'genre'  rock-cppex
                                        'filesize'  4638322
                                           'mtime'  1620737401
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Takin_ rock cppex
                                      'tag_artist'  Bachman-Turner Overdrive
                                     'tag_release'  Guitar Rock: 1974-1975
                                       'tag_title'  Takin' Care of Business
                                             'bpm'  130.314
                                    'search_title'  'business':5 'care':3 'of':4 'takin':1,2
                                   'search_artist'  'bachman':1 'bachmanturner':3 'overdrive':4 'turner':2
                                  'search_release'  '1974':4 '19741975':6 '1975':5 'guitar':1 'rock':2,3
                                     'search_rest'  '00poprockelectronic':1 'cppex':9 'files':5,6 'loose':3,4 'rock':8 'takin':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':16 '1974':13C '19741975':15C '1975':14C 'bachman':6B 'bachmanturner':8B 'business':5A 'care':3A 'cppex':24 'files':20,21 'guitar':10C 'loose':18,19 'of':4A 'overdrive':9B 'rock':11C,12C,23 'takin':1A,2A,22 'turner':7B 'unsorted':17
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['canadian', 'bachman turner overdrive', '70s', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737400.9675925  (2021-05-11 14:50:00)
                             'size'  4638322