<pre>
======================== unified (from filesystem) ========================
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                                        'duration'  '178'
                                          'artist'  'Maria Mena'
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                                         'release'  'Cause and Effect'
                                           'title'  "I'm in Love"
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 "'Q-PIANO-2']")
                                      'lastfmtags'  "['norwegian', 'rock', 'female vocalists', 'pop', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '10'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '110'
                                             'key'  '5B'
                                        'acoustid'  'f3ed7b7e-0381-4e07-92af-cd8b8fb23bd4'
rest: ''

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'TALB' (Album/Movie/Show title)                     'Cause and Effect'
'TBPM' (BPM (beats per minute))                     '110'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '2008'
'TDRC' (Recording time)                             '2008-09-15'
'TIT2' (Title/songname/content description)         "I'm in Love"
'TKEY' (Initial key)                                '5B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Maria Mena'
'TPE2' (Band/orchestra/accompaniment)               'Maria Mena'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Columbia'
'TRCK' (Track number/Position in set)               '8/10'
'TSO2'                                              'Mena, Maria'
'TSOP' (Performer sort order)                       'Mena, Maria'
'TSRC' (ISRC (international standard recording code))  'NOAAC0800222'
'TXXX:Acoustid Id'                                  'f3ed7b7e-0381-4e07-92af-cd8b8fb23bd4'
'TXXX:Artists'                                      'Maria Mena'
'TXXX:BARCODE'                                      '886973403327'
'TXXX:CATALOGNUMBER'                                '88697 34033 2'
'TXXX:MusicBrainz Album Artist Id'                  '88679ca2-2080-4cea-8669-41ab4b8d865d'
'TXXX:MusicBrainz Album Id'                         '054d7602-358d-4d3d-996b-cc95fe3231a5'
'TXXX:MusicBrainz Album Release Country'            'NO'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '88679ca2-2080-4cea-8669-41ab4b8d865d'
'TXXX:MusicBrainz Release Group Id'                 '69c21eea-7518-3a54-8446-e3c1fe27a43b'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['norwegian', 'rock', 'female vocalists', 'pop', 'singer songwriter']
'TXXX:originalyear'                                 '2008'
'TXXX:q-bass'                                       '4'
'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-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.94 dB'
'TXXX:replaygain_track_peak'                        '0.382966'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'c3d10c96-391e-4a4a-ae28-0e54beaeaade')

========================== row from database ==========================
                                              'id'  1298511
                                            'path'  /data/Music/Bulk/00poprockelectronic/Maria Mena/Maria Mena - Cause And Effect (2008)/08-maria_mena-im_in_love-prs.mp3
                                         'working'  None
                                         'bitrate'  167
                                    'duration_sec'  178
                                           'genre'  ifs-songwriter
                                        'filesize'  3838137
                                           'mtime'  1623435638
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic And (2008) 08 maria_mena im_in_love prs ifs songwriter
                                      'tag_artist'  Maria Mena
                                     'tag_release'  Cause and Effect
                                       'tag_title'  I'm in Love
                                             'bpm'  110.0
                                    'search_title'  'i':1 'im':3 'in':4 'love':5 'm':2
                                   'search_artist'  'maria':1 'mena':2
                                  'search_release'  'and':2 'cause':1 'effect':3
                                     'search_rest'  '00poprockelectronic':1 '2008':3,4 'and':2 'ifs':11 'im':7 'in':8 'love':9 'maria':5 'mena':6 'prs':10 'songwriter':12
                                    'search_combo'  '00poprockelectronic':11 '2008':13,14 'and':9C,12 'cause':8C 'effect':10C 'i':1A 'ifs':21 'im':3A,17 'in':4A,18 'love':5A,19 'm':2A 'maria':6B,15 'mena':7B,16 'prs':20 'songwriter':22
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'Q-PIANO-2', 'q-mixbeat-1', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['norwegian', 'rock', 'female vocalists', 'pop', 'singer songwriter']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1623435637.8710988  (2021-06-11 20:20:37)
                             'size'  3838137