======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '324'
                                          'artist'  'Luciano Supervielle'
                                     'text_people'  ''
                                         'release'  'Bajofondo Tango Club'
                                           'title'  'Perfume (Campo remix)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['electrotango', 'tango', 'tango nuevo', 'tango electronico', 'chillout']"
                                     'discogstags'  "['latin']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '16'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga;loc-samerica'
                                             'bpm'  '120.042'
                                             'key'  '8A'
                                        'acoustid'  '7d578d96-3237-4fcd-85b6-dceb8ee1d8fc'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '6'
'COMM:iTunNORM:eng'                                 (' 00000837 0000096B 000071C3 0000B4D5 00035D53 0003E8B6 00008FD0 000090C5 '
 '00047982 0000C072')
'COMM:iTunes_CDDB_1:eng'                            'C1126210+353165+16+150+23260+41677+64967+84670+105880+130200+142675+161515+182222+210112+233597+257897+275365+300227+325762'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '6'
'TALB' (Album/Movie/Show title)                     'Bajofondo Tango Club'
'TBPM' (BPM (beats per minute))                     '120.042'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 ['loc-style-tango or milonga', 'loc-samerica']
'TDOR' (Original release time)                      '2002'
'TDRC' (Recording time)                             '2002'
'TENC' (Encoded by)                                 'iTunes v4.7.0.42'
'TIT2' (Title/songname/content description)         'Perfume (Campo remix)'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Luciano Supervielle'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Surco Records'
'TRCK' (Track number/Position in set)               '6/16'
'TSO2'                                              'Bajofondo'
'TSOP' (Performer sort order)                       'Supervielle, Luciano'
'TXXX:ASIN'                                         'B00007M5CO'
'TXXX:Acoustid Id'                                  '7d578d96-3237-4fcd-85b6-dceb8ee1d8fc'
'TXXX:BARCODE'                                      '044006483429'
'TXXX:CATALOGNUMBER'                                '0648342'
'TXXX:MusicBrainz Album Artist Id'                  'c78a5d46-c631-41bc-8772-439002e3d3aa'
'TXXX:MusicBrainz Album Id'                         '88fd615d-4618-4547-8c86-b9f8ea13a49c'
'TXXX:MusicBrainz Album Release Country'            'AR'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '593a682a-4161-4d62-a60a-5007d8d55d79'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'latin'
'TXXX:lastfmtags'                                   ['electrotango', 'tango', 'tango nuevo', 'tango electronico', 'chillout']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.95 dB'
'TXXX:replaygain_track_peak'                        '0.412142'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'8425ee1c-de97-4151-882d-52784c776197')

========================== row from database ==========================
                                              'id'  1387689
                                            'path'  /data/Music/Bulk/00localcharacter/Emilio Kauderer - Bajofondo Tango Club/[2003] Tango Club/06 Perfume.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  324
                                           'genre'  loc-style-tango or milonga;loc-samerica
                                        'filesize'  7830503
                                           'mtime'  1620530626
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Emilio Kauderer [2003] 06 loc style tango or milonga;loc samerica
                                      'tag_artist'  Luciano Supervielle
                                     'tag_release'  Bajofondo Tango Club
                                       'tag_title'  Perfume (Campo remix)
                                             'bpm'  120.042
                                    'search_title'  'campo':2,3 'perfume':1 'remix':4,5
                                   'search_artist'  'luciano':1 'supervielle':2
                                  'search_release'  'bajofondo':1 'club':3 'tango':2
                                     'search_rest'  '2003':3,4 'emilio':1 'kauderer':2 'loc':5,10,12 'milonga':9,11 'or':8 'samerica':13 'style':6 'tango':7
                                    'search_combo'  '2003':13,14 'bajofondo':8C 'campo':2A,3A 'club':10C 'emilio':11 'kauderer':12 'loc':15,20,22 'luciano':6B 'milonga':19,21 'or':18 'perfume':1A 'remix':4A,5A 'samerica':23 'style':16 'supervielle':7B 'tango':9C,17
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['electrotango', 'tango', 'tango nuevo', 'tango electronico', 'chillout']
                                        'tag_date'  2002
                                     'discogstags'  ['latin']

============================== file details ==============================
                                           'mtime'  1620530625.609463  (2021-05-09 05:23:45)
                             'size'  7830503