======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '308'
                                          'artist'  "Sinéad O'Connor"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sacrifice'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['90s', 'irish', 'female vocalists', 'alternative', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '144.130'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '144.130'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Sacrifice'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               "Sinéad O'Connor"
'TXXX:Mp3gain_minmax'                               '121,175'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['90s', 'irish', 'female vocalists', 'alternative', 'pop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.07 dB'
'TXXX:replaygain_track_peak'                        '0.822649'

========================== row from database ==========================
                                              'id'  1531915
                                            'path'  /data/Music/Bulk/00poprockelectronic/Sinéad O_Connor/Sinead O_Connor - Sacrifice.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  308
                                           'genre'  ifs-songwriter
                                        'filesize'  4940021
                                           'mtime'  1637330757
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic O_Connor Sinead O_Connor ifs songwriter
                                      'tag_artist'  Sinéad O'Connor
                                     'tag_release'  None
                                       'tag_title'  Sacrifice
                                             'bpm'  144.13
                                    'search_title'  'sacrifice':1
                                   'search_artist'  'connor':4 'o':3 'oconnor':5 'sinead':1,2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'connor':3 'ifs':5 'o':2 'sinead':4 'songwriter':6
                                    'search_combo'  '00poprockelectronic':7 'connor':5B,9 'ifs':11 'o':4B,8 'oconnor':6B 'sacrifice':1A 'sinead':2B,3B,10 'songwriter':12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['90s', 'irish', 'female vocalists', 'alternative', 'pop']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330757.0092635  (2021-11-19 15:05:57)
                             'size'  4940021