======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '241'
                                          'artist'  'Frou Frou'
                                     'text_people'  ''
                                         'release'  'Details'
                                           'title'  'Must Be Dreaming'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['soundtrack', 'electronic', 'indie', 'female vocalists', 'cover']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-pop'
                                             'bpm'  '98.645'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Details'
'TBPM' (BPM (beats per minute))                     '98.645'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-pop'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Must Be Dreaming'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Frou Frou'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['soundtrack', 'electronic', 'indie', 'female vocalists', 'cover']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.73 dB'
'TXXX:replaygain_track_peak'                        '0.420620'

========================== row from database ==========================
                                              'id'  1274431
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Frou Frou/Details [Bonus Track]/04 Must Be Dreaming.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  241
                                           'genre'  ifs-songwriter-pop
                                        'filesize'  5809628
                                           'mtime'  1620645560
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos [Bonus Track] 04 ifs songwriter pop
                                      'tag_artist'  Frou Frou
                                     'tag_release'  Details
                                       'tag_title'  Must Be Dreaming
                                             'bpm'  98.645
                                    'search_title'  'be':2 'dreaming':3 'must':1
                                   'search_artist'  'frou':1
                                  'search_release'  'details':1
                                     'search_rest'  '00singer':1 'bonus':4,5 'eos':3 'ifs':8 'pop':9 'songwriter':2 'track':6,7
                                    'search_combo'  '00singer':6 'be':2A 'bonus':9,10 'details':5C 'dreaming':3A 'eos':8 'frou':4B 'ifs':13 'must':1A 'pop':14 'songwriter':7 'track':11,12
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'electronic', 'indie', 'female vocalists', 'cover']
                                        'tag_date'  2002
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620645559.9746432  (2021-05-10 13:19:19)
                             'size'  5809628