======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '195'
                                          'artist'  'Dance Nation'
                                     'text_people'  ''
                                         'release'  'Door Het Lint 8 cd1'
                                           'title'  'Dance'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-4', 'q-other-2', "
 "'q-piano-1', 'q-vocals-2', 'Q-HHRNBTT-1', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['dance', 'trance', 'eurodance', 'electronic', 'vocal trance']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '135.910'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             '11108F14'
'COMM:ID3v1 Comment:XXX'                            '11108F14'
'TALB' (Album/Movie/Show title)                     'Door Het Lint 8 cd1'
'TBPM' (BPM (beats per minute))                     '135.910'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'Dance'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dance Nation'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '07'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, Fraunhofer acm, 256 kBit/s, 44,100 Hz, Stereo, HQ = off'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'trance', 'eurodance', 'electronic', 'vocal trance']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.43 dB'
'TXXX:replaygain_track_peak'                        '0.455447'

========================== row from database ==========================
                                              'id'  1407711
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Door Het Lint 8 cd 1/07-Dance Nation - Dance.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  195
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  6273956
                                           'mtime'  1621695842
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 07 electronic generic radio dance
                                      'tag_artist'  Dance Nation
                                     'tag_release'  Door Het Lint 8 cd1
                                       'tag_title'  Dance
                                             'bpm'  135.91
                                    'search_title'  'dance':1
                                   'search_artist'  'dance':1 'nation':2
                                  'search_release'  '8':4 'cd1':5 'door':1 'het':2 'lint':3
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'electronic':5 'generic':2 'radio':6 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':9 '8':7C 'cd1':8C 'dance':1A,2B,11 'door':4C 'electronic':13 'generic':10 'het':5C 'lint':6C 'nation':3B 'radio':14 'trapbeat':12
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', '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-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trance', 'eurodance', 'electronic', 'vocal trance']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621695842.0203435  (2021-05-22 17:04:02)
                             'size'  6273956