======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '187'
                                          'artist'  'Marr, Hank'
                                     'text_people'  ''
                                         'release'  'Hank Marr'
                                           'title'  'Greasy Spoon'
                                           'quals'  ("['Q-OLDST-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '20'
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '99.763'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 000002C1 000002F3 00002DB3 00003287 00011800 00011800 00008057 000080CD '
 '000165C1 000165C1')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000008E8 00000000007E3D08 00000000 0044A5E1 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '20+94E344CA8B08F0A8313F54E578D49A1D+179456'
'TALB' (Album/Movie/Show title)                     'Hank Marr'
'TBPM' (BPM (beats per minute))                     '99.763'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '1980'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Greasy Spoon'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Marr, Hank'
'TRCK' (Track number/Position in set)               '2/20'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.19 dB'
'TXXX:replaygain_track_peak'                        '0.843196'

========================== row from database ==========================
                                              'id'  771695
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Zimelis [Chow, Baby!]/Hank Marr - Greasy Spoon.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  187
                                           'genre'  set-th-novelty
                                        'filesize'  4506107
                                           'mtime'  1620343080
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Zimelis [Chow, Baby!] set th novelty
                                      'tag_artist'  Marr, Hank
                                     'tag_release'  Hank Marr
                                       'tag_title'  Greasy Spoon
                                             'bpm'  99.763
                                    'search_title'  'greasy':1 'spoon':2
                                   'search_artist'  'hank':3 'marr':1,2
                                  'search_release'  'hank':1 'marr':2
                                     'search_rest'  'baby':8,9 'chow':6,7 'country':4 'exotica':2 'jazz':1 'novelty':12 'oldies':3 'set':10 'th':11 'zimelis':5
                                    'search_combo'  'baby':15,16 'chow':13,14 'country':11 'exotica':9 'greasy':1A 'hank':5B,6C 'jazz':8 'marr':3B,4B,7C 'novelty':19 'oldies':10 'set':17 'spoon':2A 'th':18 'zimelis':12
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343079.722153  (2021-05-07 01:17:59)
                             'size'  4506107