======================== unified (from filesystem) ========================
                                         'bitrate'  '196.856'
                                        'duration'  '284'
                                          'artist'  'Suzanne Vega'
                                     'text_people'  ''
                                         'release'  'Tried and True: The Best of Su'
                                           'title'  'In Liverpool'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative', 'female vocalists', 'pop', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '128.170'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Tried and True: The Best of Su'
'TBPM' (BPM (beats per minute))                     '128.170'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'In Liverpool'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Suzanne Vega'
'TRCK' (Track number/Position in set)               '9'
'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:lastfmtags'                                   ['alternative', 'female vocalists', 'pop', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.75 dB'
'TXXX:replaygain_track_peak'                        '0.438895'

========================== row from database ==========================
                                              'id'  190600
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Suzanne Vega/Best_of_Suzanne_Vega/mp3/Suzanne Vega - The Best of Suzanne Vega - Tried and True - 09 - In Liverpool.mp3
                                         'working'  None
                                         'bitrate'  196
                                    'duration_sec'  284
                                           'genre'  ifs-songwriter
                                        'filesize'  6993781
                                           'mtime'  1628356466
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Best_of_Suzanne_Vega mp3 09 ifs songwriter
                                      'tag_artist'  Suzanne Vega
                                     'tag_release'  Tried and True: The Best of Su
                                       'tag_title'  In Liverpool
                                             'bpm'  128.17
                                    'search_title'  'in':1 'liverpool':2
                                   'search_artist'  'suzanne':1 'vega':2
                                  'search_release'  'and':2 'best':6 'of':7 'su':8 'the':5 'tried':1 'true':3,4
                                     'search_rest'  '00singer':1 'best':4 'eos':3 'ifs':9 'mp3':8 'of':5 'songwriter':2 'suzanne':6 'vega':7
                                    'search_combo'  '00singer':13 'and':6C 'best':10C,16 'eos':15 'ifs':21 'in':1A 'liverpool':2A 'mp3':20 'of':11C,17 'songwriter':14 'su':12C 'suzanne':3B,18 'the':9C 'tried':5C 'true':7C,8C 'vega':4B,19
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'female vocalists', 'pop', 'folk', 'singer songwriter']
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628356466.2862449  (2021-08-07 19:14:26)
                             'size'  6993781