======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '236'
                                          'artist'  'Queen & David Bowie'
                                     'text_people'  ''
                                         'release'  'Greatest Hits II'
                                           'title'  'Under Pressure'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['queen', 'british', 'glam rock', 'rock', '80s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '113.580'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits II'
'TBPM' (BPM (beats per minute))                     '113.580'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Under Pressure'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Queen & David Bowie'
'TRCK' (Track number/Position in set)               '2'
'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'                                   ['queen', 'british', 'glam rock', 'rock', '80s', 'classic rock']
'TXXX:q-bass'                                       '2'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.99 dB'
'TXXX:replaygain_track_peak'                        '0.577891'

========================== row from database ==========================
                                              'id'  1291390
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Best of 70 80 & 90s - 211 Hits (6CDS)/David Bowie & Freddie Mercury - Under Pressure.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  236
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  3790333
                                           'mtime'  1638563426
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic The Best of 70 80 90s 211 (6CDS) Freddie Mercury electronic generic or radio unsorted
                                      'tag_artist'  Queen & David Bowie
                                     'tag_release'  Greatest Hits II
                                       'tag_title'  Under Pressure
                                             'bpm'  113.58
                                    'search_title'  'pressure':2 'under':1
                                   'search_artist'  'bowie':3 'david':2 'queen':1
                                  'search_release'  'greatest':1 'hits':2 'ii':3
                                     'search_rest'  '00poprockelectronic':1 '211':8 '6cds':9,10 '70':5 '80':6 '90s':7 'best':3 'electronic':13 'freddie':11 'generic':14 'mercury':12 'of':4 'or':15 'radio':16 'the':2 'unsorted':17
                                    'search_combo'  '00poprockelectronic':9 '211':16 '6cds':17,18 '70':13 '80':14 '90s':15 'best':11 'bowie':5B 'david':4B 'electronic':21 'freddie':19 'generic':22 'greatest':6C 'hits':7C 'ii':8C 'mercury':20 'of':12 'or':23 'pressure':2A 'queen':3B 'radio':24 'the':10 'under':1A 'unsorted':25
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', '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-2', 'q-grit-2']
                                      'lastfmtags'  ['queen', 'british', 'glam rock', 'rock', '80s', 'classic rock']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1638563426.0067577  (2021-12-03 21:30:26)
                             'size'  3790333