======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '136'
                                          'artist'  '7 Seconds of Love'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Winners'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['ska punk', 'comedy', 'ska', 'british', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-ska'
                                             'bpm'  '89.731'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '89.731'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-ska'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Winners'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               '7 Seconds of Love'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['ska punk', 'comedy', 'ska', 'british', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.31 dB'
'TXXX:replaygain_track_peak'                        '0.524749'

========================== row from database ==========================
                                              'id'  719595
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Winners.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  136
                                           'genre'  loc-style-reggae or dub or ska or dancehall-ska
                                        'filesize'  3272222
                                           'mtime'  1620524440
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism loc style reggae or dub or ska or dancehall ska
                                      'tag_artist'  7 Seconds of Love
                                     'tag_release'  None
                                       'tag_title'  Winners
                                             'bpm'  89.731
                                    'search_title'  'winners':1
                                   'search_artist'  '7':1 'love':4 'of':3 'seconds':2
                                  'search_release'  
                                     'search_rest'  'dancehall':11 'dub':9 'hiphop':1 'loc':5 'or':8 'rap':2 'reggae':7 'rnb':3 'ska':10 'style':6 'turntablism':4
                                    'search_combo'  '7':2B 'dancehall':16 'dub':14 'hiphop':6 'loc':10 'love':5B 'of':4B 'or':13 'rap':7 'reggae':12 'rnb':8 'seconds':3B 'ska':15 'style':11 'turntablism':9 'winners':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['ska punk', 'comedy', 'ska', 'british', 'rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524440.4723396  (2021-05-09 03:40:40)
                             'size'  3272222