======================== unified (from filesystem) ========================
                                         'bitrate'  '191.984'
                                        'duration'  '313'
                                          'artist'  'Paul Kalkbrenner'
                                     'text_people'  ''
                                         'release'  'Zeit'
                                           'title'  'Frühling'
                                           '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-4', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['chill', 'electronic', 'chillout', 'minimal', 'ambient']"
                                     'discogstags'  "['electronic', 'techno', 'electro']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '86.622'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Zeit'
'TBPM' (BPM (beats per minute))                     '86.622'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Frühling'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Kalkbrenner'
'TRCK' (Track number/Position in set)               '2'
'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', 'techno', 'electro']
'TXXX:lastfmtags'                                   ['chill', 'electronic', 'chillout', 'minimal', 'ambient']
'TXXX:original release date'                        ['2001', '2001']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                        '+3.39 dB'
'TXXX:replaygain_track_peak'                        '0.334612'

========================== row from database ==========================
                                              'id'  1304188
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/02.paul kalkbrenner - Frühling.mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  313
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  7519847
                                           'mtime'  1621085282
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 02.paul kalkbrenner electronic th techno minimal or deephouse
                                      'tag_artist'  Paul Kalkbrenner
                                     'tag_release'  Zeit
                                       'tag_title'  Frühling
                                             'bpm'  86.622
                                    'search_title'  'fruhling':1,2
                                   'search_artist'  'kalkbrenner':2 'paul':1
                                  'search_release'  'zeit':1
                                     'search_rest'  '00poprockelectronic':1 '02':7 '02paul':9 'deephouse':16 'electronic':11 'files':5,6 'kalkbrenner':10 'loose':3,4 'minimal':14 'or':15 'paul':8 'techno':13 'th':12 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 '02':12 '02paul':14 'deephouse':21 'electronic':16 'files':10,11 'fruhling':1A,2A 'kalkbrenner':4B,15 'loose':8,9 'minimal':19 'or':20 'paul':3B,13 'techno':18 'th':17 'unsorted':7 'zeit':5C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  11A
                                           '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-4', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['chill', 'electronic', 'chillout', 'minimal', 'ambient']
                                        'tag_date'  2001
                                     'discogstags'  ['electronic', 'techno', 'electro']

============================== file details ==============================
                                           'mtime'  1621085281.6703482  (2021-05-15 15:28:01)
                             'size'  7519847