======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '146'
                                          'artist'  'V-Lenz'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Kurztrip'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-3', "
 "'Q-LOCALNESS-2', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism;loc-eur-germany'
                                             'bpm'  '119.900'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '119.900'
'TCON' (Content type, a.k.a. Genre)                 ['hip hop or rnb or rap or turntablism', 'loc-eur-germany']
'TIT2' (Title/songname/content description)         'Kurztrip'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'V-Lenz'
'TXXX:Mp3gain_minmax'                               '000,193'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.26 dB'
'TXXX:replaygain_track_peak'                        '0.594280'

========================== row from database ==========================
                                              'id'  1342355
                                            'path'  /data/Music/Bulk/00poprockelectronic/V-lenz/V-Lenz -  Kurztrip.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  146
                                           'genre'  hip hop or rnb or rap or turntablism;loc-eur-germany
                                        'filesize'  2341206
                                           'mtime'  1620536013
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic lenz hip hop or rnb or rap or turntablism;loc eur germany
                                      'tag_artist'  V-Lenz
                                     'tag_release'  None
                                       'tag_title'  Kurztrip
                                             'bpm'  119.9
                                    'search_title'  'kurztrip':1
                                   'search_artist'  'lenz':2 'v':1 'vlenz':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'eur':12 'germany':13 'hip':3 'hop':4 'lenz':2 'loc':9,11 'or':5 'rap':7 'rnb':6 'turntablism':8,10
                                    'search_combo'  '00poprockelectronic':5 'eur':16 'germany':17 'hip':7 'hop':8 'kurztrip':1A 'lenz':3B,6 'loc':13,15 'or':9 'rap':11 'rnb':10 'turntablism':12,14 'v':2B 'vlenz':4B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620536013.0000377  (2021-05-09 06:53:33)
                             'size'  2341206