======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '182'
                                          'artist'  '101 Strings Orchestra'
                                     'text_people'  ''
                                         'release'  'The Most Beautiful Romantic Melodies'
                                           'title'  'Never on a Sunday'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  '20'
                                            'date'  '1983'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-easy listening'
                                             'bpm'  '119.7'
                                             'key'  '1A'
                                        'acoustid'  '28a704b0-eb74-4ad7-82a3-fd088c0dca82'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '119.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-easy listening'
'TDOR' (Original release time)                      '1983'
'TDRC' (Recording time)                             '1983'
'TIT2' (Title/songname/content description)         'Never on a Sunday'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               '101 Strings Orchestra'
'TPE2' (Band/orchestra/accompaniment)               '101 Strings Orchestra'
'TPOS' (Part of a set)                              '1/3'
'TPUB' (Publisher)                                  'Ronco Records'
'TRCK' (Track number/Position in set)               '15/20'
'TSO2'                                              '101 Strings'
'TSOP' (Performer sort order)                       '101 Strings'
'TSST' (Set subtitle)                               'Morning'
'TXXX:Acoustid Id'                                  '28a704b0-eb74-4ad7-82a3-fd088c0dca82'
'TXXX:Artists'                                      '101 Strings Orchestra'
'TXXX:CATALOGNUMBER'                                'RTL 2094 B'
'TXXX:MusicBrainz Album Artist Id'                  '5c176092-cb4d-4e05-806b-1e9414f2b28c'
'TXXX:MusicBrainz Album Id'                         'a7596a48-111e-4bdc-9889-b02a6935d3a6'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '5c176092-cb4d-4e05-806b-1e9414f2b28c'
'TXXX:MusicBrainz Release Group Id'                 'a41eca38-d0a8-445f-84f7-838fafced9c2'
'TXXX:MusicBrainz Release Track Id'                 '24908801-38f8-30dc-bb44-7e0ebdd2749e'
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'TXXX:Q-CHART'                                      '2'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['instrumental', 'edhits', 'myhits', 'classical', 'easy listening']
'TXXX:originalyear'                                 '1983'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.64 dB'
'TXXX:replaygain_track_peak'                        '0.758887'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a1dfe170-e42f-4e03-a265-5916f80693ae')

========================== row from database ==========================
                                              'id'  1479155
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/1983 - The Most Beautiful Romantic Melodies/Record 1/15 - Never On A Sunday - 101 Strings (1983).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  182
                                           'genre'  electronic-generic or radio-easy listening
                                        'filesize'  7287034
                                           'mtime'  1621705505
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1983 Record 15 On A (1983) electronic generic or radio easy listening
                                      'tag_artist'  101 Strings Orchestra
                                     'tag_release'  The Most Beautiful Romantic Melodies
                                       'tag_title'  Never on a Sunday
                                             'bpm'  119.7
                                    'search_title'  'a':3 'never':1 'on':2 'sunday':4
                                   'search_artist'  '101':1 'orchestra':3 'strings':2
                                  'search_release'  'beautiful':3 'melodies':5 'most':2 'romantic':4 'the':1
                                     'search_rest'  '1983':5,9 'a':8 'country':4 'easy':14 'electronic':10 'exotica':2 'generic':11 'jazz':1 'listening':15 'oldies':3 'on':7 'or':12 'radio':13 'record':6
                                    'search_combo'  '101':5B '1983':17,21 'a':3A,20 'beautiful':10C 'country':16 'easy':26 'electronic':22 'exotica':14 'generic':23 'jazz':13 'listening':27 'melodies':12C 'most':9C 'never':1A 'oldies':15 'on':2A,19 'or':24 'orchestra':7B 'radio':25 'record':18 'romantic':11C 'strings':6B 'sunday':4A 'the':8C
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-1', 'Q-OLDST-3', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3']
                                      'lastfmtags'  ['instrumental', 'edhits', 'myhits', 'classical', 'easy listening']
                                        'tag_date'  1983
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705504.9087982  (2021-05-22 19:45:04)
                             'size'  7287034