======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '314'
                                          'artist'  'Fatboy Slim'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Going Out of my Head'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'house', 'electronica', 'electronic', 'big beat']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-bigbeat'
                                             'bpm'  '133.0'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '133.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-bigbeat'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Going Out of my Head'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Fatboy Slim'
'TXXX:Mp3gain_minmax'                               '000,191'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'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:lastfmtags'                                   ['dance', 'house', 'electronica', 'electronic', 'big beat']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.44 dB'
'TXXX:replaygain_track_peak'                        '0.649369'

========================== row from database ==========================
                                              'id'  1294180
                                            'path'  /data/Music/Bulk/00poprockelectronic/Fatboy Slim/[1996] Better Living Through Chemistry/Fatboy Slim - Going Out of my Head.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  314
                                           'genre'  electronic-generic or radio-bigbeat
                                        'filesize'  6301509
                                           'mtime'  1621696254
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [1996] Better Living Through Chemistry electronic generic or radio bigbeat
                                      'tag_artist'  Fatboy Slim
                                     'tag_release'  None
                                       'tag_title'  Going Out of my Head
                                             'bpm'  133.0
                                    'search_title'  'going':1 'head':5 'my':4 'of':3 'out':2
                                   'search_artist'  'fatboy':1 'slim':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1996':2,3 'better':4 'bigbeat':12 'chemistry':7 'electronic':8 'generic':9 'living':5 'or':10 'radio':11 'through':6
                                    'search_combo'  '00poprockelectronic':8 '1996':9,10 'better':11 'bigbeat':19 'chemistry':14 'electronic':15 'fatboy':6B 'generic':16 'going':1A 'head':5A 'living':12 'my':4A 'of':3A 'or':17 'out':2A 'radio':18 'slim':7B 'through':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           '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-3', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', 'electronica', 'electronic', 'big beat']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696253.512875  (2021-05-22 17:10:53)
                             'size'  6301509