======================== unified (from filesystem) ========================
                                         'bitrate'  '235.404'
                                        'duration'  '237'
                                          'artist'  'Portishead'
                                     'text_people'  ''
                                         'release'  'Dummy'
                                           'title'  'Numb'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronic', 'alternative', 'female vocalists', 'trip hop']"
                                     'discogstags'  "['electronic', 'downtempo', 'trip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '145.895'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dummy'
'TBPM' (BPM (beats per minute))                     '145.895'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Numb'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Portishead'
'TRCK' (Track number/Position in set)               '7'
'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:discogstags'                                  ['electronic', 'downtempo', 'trip hop']
'TXXX:lastfmtags'                                   ['electronic', 'alternative', 'female vocalists', 'trip hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.52 dB'
'TXXX:replaygain_track_peak'                        '0.462932'

========================== row from database ==========================
                                              'id'  1283499
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Portishead/MBZ;#Portishead;#Dummy;#07;#Numb.mp3
                                         'working'  None
                                         'bitrate'  235
                                    'duration_sec'  237
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  7005698
                                           'mtime'  1636910862
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip MBZ;#Portishead;#Dummy;#07;#Numb electronic trip hop downtempo acid jazz
                                      'tag_artist'  Portishead
                                     'tag_release'  Dummy
                                       'tag_title'  Numb
                                             'bpm'  145.895
                                    'search_title'  'numb':1
                                   'search_artist'  'portishead':1
                                  'search_release'  'dummy':1
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 '07':6,11 'acid':17 'downtempo':16 'dummy':5,10 'electronic':13 'hop':15 'jazz':18 'mbz':3,8 'numb':7,12 'portishead':4,9 'trip':14
                                    'search_combo'  '00poprockelectronic':4 '00trip':5 '07':9,14 'acid':20 'downtempo':19 'dummy':3C,8,13 'electronic':16 'hop':18 'jazz':21 'mbz':6,11 'numb':1A,10,15 'portishead':2B,7,12 'trip':17
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', '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-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'alternative', 'female vocalists', 'trip hop']
                                        'tag_date'  1994
                                     'discogstags'  ['electronic', 'downtempo', 'trip hop']

============================== file details ==============================
                                           'mtime'  1636910861.793546  (2021-11-14 18:27:41)
                             'size'  7005698