======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '960'
                                          'artist'  'Zwei Kreise'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ' QR004 - Zwei Kreise - Panorama Island'
                                           '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-4', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['electronica', 'ambient techno', 'idm', 'dub techno', 'acid']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '127.8'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '127.8'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2015'
'TIT2' (Title/songname/content description)         ' QR004 - Zwei Kreise - Panorama Island'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Zwei Kreise'
'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:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'ambient techno', 'idm', 'dub techno', 'acid']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.19 dB'
'TXXX:replaygain_track_peak'                        '0.631964'

========================== row from database ==========================
                                              'id'  856768
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/soundcloud/zweikreise/Preview - QR004 - Zwei Kreise - Panorama Island-324437269.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  960
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  15363765
                                           'mtime'  1621085089
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm soundcloud zweikreise Preview 324437269 electronic th techno minimal deephouse
                                      'tag_artist'  Zwei Kreise
                                     'tag_release'  None
                                       'tag_title'   QR004 - Zwei Kreise - Panorama Island
                                             'bpm'  127.8
                                    'search_title'  'island':5 'kreise':3 'panorama':4 'qr004':1 'zwei':2
                                   'search_artist'  'kreise':2 'zwei':1
                                  'search_release'  
                                     'search_rest'  '324437269':4 'deephouse':9 'electronic':5 'minimal':8 'preview':3 'soundcloud':1 'techno':7 'th':6 'zweikreise':2
                                    'search_combo'  '324437269':11 'deephouse':16 'electronic':12 'island':5A 'kreise':3A,7B 'minimal':15 'panorama':4A 'preview':10 'qr004':1A 'soundcloud':8 'techno':14 'th':13 'zwei':2A,6B 'zweikreise':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           '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-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'ambient techno', 'idm', 'dub techno', 'acid']
                                        'tag_date'  2015
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621085088.7691045  (2021-05-15 15:24:48)
                             'size'  15363765