======================== unified (from filesystem) ========================
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                                        'duration'  '354'
                                          'artist'  '101 Strings'
                                     'text_people'  ''
                                         'release'  'Gypsy Campfires'
                                           'title'  'Two Guitars'
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '7'
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-easy listening'
                                             'bpm'  '143.6'
                                             'key'  '6B'
                                        'acoustid'  '6073b7ae-9e03-4a42-8e00-432d179420fb'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TBPM' (BPM (beats per minute))                     '143.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-easy listening'
'TDOR' (Original release time)                      '1958'
'TDRC' (Recording time)                             '2014-01-15'
'TIT2' (Title/songname/content description)         'Two Guitars'
'TKEY' (Initial key)                                '6B'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               '101 Strings'
'TPE2' (Band/orchestra/accompaniment)               '101 Strings'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Sunday Club Records'
'TRCK' (Track number/Position in set)               '3/7'
'TSO2'                                              '101 Strings'
'TSOP' (Performer sort order)                       '101 Strings'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME 32bits version 3.98.4 (http://www.mp3dev.org/)'
'TXXX:Acoustid Id'                                  '6073b7ae-9e03-4a42-8e00-432d179420fb'
'TXXX:Artists'                                      '101 Strings'
'TXXX:MusicBrainz Album Artist Id'                  '5c176092-cb4d-4e05-806b-1e9414f2b28c'
'TXXX:MusicBrainz Album Id'                         'dc643c59-5d0e-4bee-b345-1f3ccc67ac5c'
'TXXX:MusicBrainz Album Release Country'            'CA'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5c176092-cb4d-4e05-806b-1e9414f2b28c'
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'TXXX:MusicBrainz Release Track Id'                 '877ae9ff-6c78-4986-a78f-a5cf8b61df05'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['romani', 'romantic', 'modern', 'folk', 'classical', 'folk, world, & country']
'TXXX:lastfmtags'                                   ['instrumental', 'strings', 'myhitparade', 'myhits', 'easy listening']
'TXXX:originalyear'                                 '1958'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.556189'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'5c78e93d-378a-4de4-88bc-7a2b8835effc')

========================== row from database ==========================
                                              'id'  1479584
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The 101 Strings Orchestra/1958 - Gypsy Campfires/03 - Two Guitars.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  354
                                           'genre'  electronic-generic or radio-easy listening
                                        'filesize'  5748944
                                           'mtime'  1621705517
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country The Orchestra 1958 03 electronic generic or radio easy listening
                                      'tag_artist'  101 Strings
                                     'tag_release'  Gypsy Campfires
                                       'tag_title'  Two Guitars
                                             'bpm'  143.6
                                    'search_title'  'guitars':2 'two':1
                                   'search_artist'  '101':1 'strings':2
                                  'search_release'  'campfires':2 'gypsy':1
                                     'search_rest'  '1958':7 'country':4 'easy':12 'electronic':8 'exotica':2 'generic':9 'jazz':1 'listening':13 'oldies':3 'or':10 'orchestra':6 'radio':11 'the':5
                                    'search_combo'  '101':3B '1958':13 'campfires':6C 'country':10 'easy':18 'electronic':14 'exotica':8 'generic':15 'guitars':2A 'gypsy':5C 'jazz':7 'listening':19 'oldies':9 'or':16 'orchestra':12 'radio':17 'strings':4B 'the':11 'two':1A
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-1', 'q-play-2', 'Q-OLDST-3', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'q-bass-3']
                                      'lastfmtags'  ['instrumental', 'strings', 'myhitparade', 'myhits', 'easy listening']
                                        'tag_date'  2014
                                     'discogstags'  ['romani', 'romantic', 'modern', 'folk', 'classical', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621705517.3603947  (2021-05-22 19:45:17)
                             'size'  5748944