======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '311'
                                          'artist'  '2raumwohnung'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sasha (sex secret 2Raum Mix)'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', 'Q-OLDST-3', "
 "'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-3']")
                                      'lastfmtags'  "['german', 'electronic', 'pop', 'deutsch']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-we-electro;loc-eur-germany'
                                             'bpm'  '129.979'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '129.979'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-we-electro', 'loc-eur-germany']
'TIT2' (Title/songname/content description)         'Sasha (sex secret 2Raum Mix)'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               '2raumwohnung'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['german', 'electronic', 'pop', 'deutsch']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.15 dB'
'TXXX:replaygain_track_peak'                        '0.454688'

========================== row from database ==========================
                                              'id'  1336486
                                            'path'  /data/Music/Bulk/00poprockelectronic/2raumwohnung/2raumwohnung__Sasha (sex secret 2Raum Mix).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  311
                                           'genre'  electronic-we-electro;loc-eur-germany
                                        'filesize'  7485276
                                           'mtime'  1620479842
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 2raumwohnung__Sasha electronic we electro;loc eur germany
                                      'tag_artist'  2raumwohnung
                                     'tag_release'  None
                                       'tag_title'  Sasha (sex secret 2Raum Mix)
                                             'bpm'  129.979
                                    'search_title'  '2raum':5 'mix':6,7 'sasha':1 'secret':4 'sex':2,3
                                   'search_artist'  '2raumwohnung':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '2raumwohnung':2 'electro':6,8 'electronic':4 'eur':10 'germany':11 'loc':7,9 'sasha':3 'we':5
                                    'search_combo'  '00poprockelectronic':9 '2raum':5A '2raumwohnung':8B,10 'electro':14,16 'electronic':12 'eur':18 'germany':19 'loc':15,17 'mix':6A,7A 'sasha':1A,11 'secret':4A 'sex':2A,3A 'we':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', '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-3', 'q-chart-3', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['german', 'electronic', 'pop', 'deutsch']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620479842.2464821  (2021-05-08 15:17:22)
                             'size'  7485276