======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '386'
                                          'artist'  'zzzzra'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'bp4 [ version. ]-148760862'
                                           'quals'  ("['Q-MIXBEAT-3', 'Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-4', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '120.1'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '120.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'bp4 [ version. ]-148760862'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'zzzzra'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.02 dB'
'TXXX:replaygain_track_peak'                        '0.710724'

========================== row from database ==========================
                                              'id'  857618
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/soundcloud/zzzzra/bp4 [ version. ]-148760862.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  386
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  6179146
                                           'mtime'  1621085104
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm soundcloud electronic th techno minimal or deephouse
                                      'tag_artist'  zzzzra
                                     'tag_release'  None
                                       'tag_title'  bp4 [ version. ]-148760862
                                             'bpm'  120.1
                                    'search_title'  '148760862':4,5 'bp4':1 'version':2,3
                                   'search_artist'  'zzzzra':1
                                  'search_release'  
                                     'search_rest'  'deephouse':7 'electronic':2 'minimal':5 'or':6 'soundcloud':1 'techno':4 'th':3
                                    'search_combo'  '148760862':4A,5A 'bp4':1A 'deephouse':13 'electronic':8 'minimal':11 'or':12 'soundcloud':7 'techno':10 'th':9 'version':2A,3A 'zzzzra':6B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'techno', 'dub techno', 'minimal', 'ambient']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621085104.2256007  (2021-05-15 15:25:04)
                             'size'  6179146