======================== unified (from filesystem) ========================
                                         'bitrate'  '170.452'
                                        'duration'  '153'
                                          'artist'  'Bo Diddley'
                                     'text_people'  ''
                                         'release'  'The Chess Years 1955 - 1974'
                                           'title'  'Say Boss Man'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-HHRNBTT-2', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']"
                                     'discogstags'  ("['blues rock', 'electric blues', 'funk', 'soul', 'rock', 'funk / soul', "
 "'blues']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  '27'
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll;rock-early-blues'
                                             'bpm'  '144'
                                             'key'  '3A'
                                        'acoustid'  'cbc13d3e-ef5e-40d4-bf73-3a4040d9adbe'
rest: ''

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

'APIC:Box Front Side'                               type PictureType.COVER_FRONT (Cover (front)) b'Box Front Side'
                                     
'TALB' (Album/Movie/Show title)                     'The Chess Years 1955 - 1974'
'TBPM' (BPM (beats per minute))                     '144'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-early-rocknroll', 'rock-early-blues']
'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Say Boss Man'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Bo Diddley'
'TPE2' (Band/orchestra/accompaniment)               'Bo Diddley'
'TPOS' (Part of a set)                              '1/12'
'TPUB' (Publisher)                                  'Charly R&B'
'TRCK' (Track number/Position in set)               '20/27'
'TSO2'                                              'Diddley, Bo'
'TSOP' (Performer sort order)                       'Diddley, Bo'
'TSRC' (ISRC (international standard recording code))  'USMC15747019'
'TSST' (Set subtitle)                               'Hey Bo Diddley'
'TXXX:Acoustid Id'                                  'cbc13d3e-ef5e-40d4-bf73-3a4040d9adbe'
'TXXX:Artists'                                      'Bo Diddley'
'TXXX:CATALOGNUMBER'                                'CD Red Box 8'
'TXXX:Mp3gain_minmax'                               '000,189'
'TXXX:MusicBrainz Album Artist Id'                  'bf659d74-0b61-488c-8a7d-594f43bed9e0'
'TXXX:MusicBrainz Album Id'                         'b3cceeac-39d7-44a6-bd16-2a50d698fc7c'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'bf659d74-0b61-488c-8a7d-594f43bed9e0'
'TXXX:MusicBrainz Release Group Id'                 '2b747e89-156a-4f0a-b872-f410f1051245'
'TXXX:MusicBrainz Release Track Id'                 'c60e475e-d837-470f-ab1e-4d91d3440c32'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['blues rock', 'electric blues', 'funk', 'soul', 'rock', 'funk / soul', 'blues']
'TXXX:lastfmtags'                                   ['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']
'TXXX:originalyear'                                 '1993'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'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'                        '+2.99 dB'
'TXXX:replaygain_track_peak'                        '0.526859'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'537fd316-c6ac-41e7-9255-8f88f3098eb9')

========================== row from database ==========================
                                              'id'  782973
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Diddley, Bo/Bo Diddley (re-issue)/Bo Diddley - Say Boss Man.mp3
                                         'working'  None
                                         'bitrate'  170
                                    'duration_sec'  153
                                           'genre'  rock-pop-early-rocknroll;rock-early-blues
                                        'filesize'  3296708
                                           'mtime'  1622659486
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Diddley, (re issue) rock pop early rocknroll;rock early blues
                                      'tag_artist'  Bo Diddley
                                     'tag_release'  The Chess Years 1955 - 1974
                                       'tag_title'  Say Boss Man
                                             'bpm'  144.0
                                    'search_title'  'boss':2 'man':3 'say':1
                                   'search_artist'  'bo':1 'diddley':2
                                  'search_release'  '1955':4 '1974':5 'chess':2 'the':1 'years':3
                                     'search_rest'  'blues':18 'country':4 'diddley':5,6 'early':13 'exotica':2 'issue':9,10 'jazz':1 'oldies':3 'pop':12 're':7,8 'rock':11,15,17 'rocknroll':14,16
                                    'search_combo'  '1955':9C '1974':10C 'blues':28 'bo':4B 'boss':2A 'chess':7C 'country':14 'diddley':5B,15,16 'early':23 'exotica':12 'issue':19,20 'jazz':11 'man':3A 'oldies':13 'pop':22 're':17,18 'rock':21,25,27 'rocknroll':24,26 'say':1A 'the':6C 'years':8C
                                    'tag_tracknum'  20
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']
                                        'tag_date'  1993
                                     'discogstags'  ['blues rock', 'electric blues', 'funk', 'soul', 'rock', 'funk / soul', 'blues']

============================== file details ==============================
                                           'mtime'  1622659486.3465235  (2021-06-02 20:44:46)
                             'size'  3296708