======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '135'
                                          'artist'  'Roedelius'
                                     'text_people'  ''
                                         'release'  'Lustwandel'
                                           'title'  'Betrachtung'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-1', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ambient', 'krautrock', 'electronic', 'experimental', 'earwaves']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '1981'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '143.2'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Lustwandel'
'TBPM' (BPM (beats per minute))                     '143.2'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '1981'
'TIT2' (Title/songname/content description)         'Betrachtung'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Roedelius'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['ambient', 'krautrock', 'electronic', 'experimental', 'earwaves']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.74 dB'
'TXXX:replaygain_track_peak'                        '0.671420'

========================== row from database ==========================
                                              'id'  1364110
                                            'path'  /data/Music/Bulk/00poprockelectronic/00calmer/1981 - Roedelius - Lustwandel (Sky) [320k]/04 - Betrachtung.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  135
                                           'genre'  electronic
                                        'filesize'  5430434
                                           'mtime'  1636913028
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00calmer 1981 (Sky) [320k] 04 electronic
                                      'tag_artist'  Roedelius
                                     'tag_release'  Lustwandel
                                       'tag_title'  Betrachtung
                                             'bpm'  143.2
                                    'search_title'  'betrachtung':1
                                   'search_artist'  'roedelius':1
                                  'search_release'  'lustwandel':1
                                     'search_rest'  '00calmer':2 '00poprockelectronic':1 '1981':3 '320k':6,7 'electronic':8 'sky':4,5
                                    'search_combo'  '00calmer':5 '00poprockelectronic':4 '1981':6 '320k':9,10 'betrachtung':1A 'electronic':11 'lustwandel':3C 'roedelius':2B 'sky':7,8
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['ambient', 'krautrock', 'electronic', 'experimental', 'earwaves']
                                        'tag_date'  1981
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636913027.614939  (2021-11-14 19:03:47)
                             'size'  5430434