======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '244'
                                          'artist'  'Pet Shop Boys'
                                     'text_people'  ''
                                         'release'  'Discography: The Complete Singles Collection'
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 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
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                                      'lastfmtags'  "['80s', 'new wave', 'electronic', 'pop', 'synthpop']"
                                     'discogstags'  "['electro', 'synth-pop', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '18'
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '126'
                                             'key'  '8B'
                                        'acoustid'  '25621e37-6983-4590-9e64-185dac9ae90a'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Discography: The Complete Singles Collection'
'TBPM' (BPM (beats per minute))                     '126'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Suburbia'
'TKEY' (Initial key)                                '8B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Pet Shop Boys'
'TPE2' (Band/orchestra/accompaniment)               'Pet Shop Boys'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'EMI Records USA'
'TRCK' (Track number/Position in set)               '4/18'
'TSO2'                                              'Pet Shop Boys'
'TSOP' (Performer sort order)                       'Pet Shop Boys'
'TSRC' (ISRC (international standard recording code))  'GBAYE1001085'
'TXXX:Acoustid Id'                                  '25621e37-6983-4590-9e64-185dac9ae90a'
'TXXX:Artists'                                      'Pet Shop Boys'
'TXXX:BARCODE'                                      '0208314334225'
'TXXX:CATALOGNUMBER'                                'CDP 597097'
'TXXX:MusicBrainz Album Artist Id'                  'be540c02-7898-4b79-9acc-c8122c7d9e83'
'TXXX:MusicBrainz Album Id'                         '51fbbee7-60b1-48c8-b058-92510439d95d'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'be540c02-7898-4b79-9acc-c8122c7d9e83'
'TXXX:MusicBrainz Release Group Id'                 '8e040acb-3886-3e66-b92c-b3fca32226ab'
'TXXX:MusicBrainz Release Track Id'                 'f98cfadd-99c3-4f90-9ccf-a0a301077f63'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electro', 'synth-pop', 'electronic']
'TXXX:lastfmtags'                                   ['80s', 'new wave', 'electronic', 'pop', 'synthpop']
'TXXX:originalyear'                                 '1991'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.89 dB'
'TXXX:replaygain_track_peak'                        '0.706676'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'96979f9d-c5a9-43dc-a2d4-65b2793f150b')

========================== row from database ==========================
                                              'id'  1417367
                                            'path'  /data/Music/Bulk/00poprockelectronic-waves-disco/00disco-italo/Pet Shop Boys/1991 - Discography - The Complete Singles Collection/04. Suburbia.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  244
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  9822079
                                           'mtime'  1620609737
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic waves disco 00disco italo 1991 04. electronic we disco or italo
                                      'tag_artist'  Pet Shop Boys
                                     'tag_release'  Discography: The Complete Singles Collection
                                       'tag_title'  Suburbia
                                             'bpm'  126.0
                                    'search_title'  'suburbia':1
                                   'search_artist'  'boys':3 'pet':1 'shop':2
                                  'search_release'  'collection':6 'complete':4 'discography':1,2 'singles':5 'the':3
                                     'search_rest'  '00disco':4 '00poprockelectronic':1 '04':7,8 '1991':6 'disco':3 'electronic':9 'italo':5 'or':11 'waves':2 'we':10
                                    'search_combo'  '00disco':14 '00poprockelectronic':11 '04':17,18 '1991':16 'boys':4B 'collection':10C 'complete':8C 'disco':13 'discography':5C,6C 'electronic':19 'italo':15 'or':21 'pet':2B 'shop':3B 'singles':9C 'suburbia':1A 'the':7C 'waves':12 'we':20
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'new wave', 'electronic', 'pop', 'synthpop']
                                        'tag_date'  1991
                                     'discogstags'  ['electro', 'synth-pop', 'electronic']

============================== file details ==============================
                                           'mtime'  1620609736.5960944  (2021-05-10 03:22:16)
                             'size'  9822079