======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '305'
                                          'artist'  'Jk'
                                     'text_people'  ''
                                         'release'  "Best Ever Top 100 90's"
                                           'title'  'My Radio'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['90s', 'dance', 'eurodance', 'italian', 'all']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '131.841'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Best Ever Top 100 90's"
'TBPM' (BPM (beats per minute))                     '131.841'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1995'
'TENC' (Encoded by)                                 'lacadau'
'TIT2' (Title/songname/content description)         'My Radio'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jk'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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'                                   ['90s', 'dance', 'eurodance', 'italian', 'all']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.95 dB'
'TXXX:replaygain_track_peak'                        '0.820822'

========================== row from database ==========================
                                              'id'  1334605
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/88_My_Radio.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  305
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  12217282
                                           'mtime'  1621696057
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 88_My_Radio electronic generic or radio unsorted
                                      'tag_artist'  Jk
                                     'tag_release'  Best Ever Top 100 90's
                                       'tag_title'  My Radio
                                             'bpm'  131.841
                                    'search_title'  'my':1 'radio':2
                                   'search_artist'  'jk':1
                                  'search_release'  '100':4 '90':5 '90s':7 'best':1 'ever':2 's':6 'top':3
                                     'search_rest'  '00poprockelectronic':1 '88':3 '90s':2 'electronic':6 'generic':7 'my':4 'or':8 'radio':5,9 'unsorted':10
                                    'search_combo'  '00poprockelectronic':11 '100':7C '88':13 '90':8C '90s':10C,12 'best':4C 'electronic':16 'ever':5C 'generic':17 'jk':3B 'my':1A,14 'or':18 'radio':2A,15,19 's':9C 'top':6C 'unsorted':20
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['90s', 'dance', 'eurodance', 'italian', 'all']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696057.1258922  (2021-05-22 17:07:37)
                             'size'  12217282