======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '314'
                                          'artist'  'Solvent'
                                     'text_people'  ''
                                         'release'  'Solvent City'
                                           'title'  'Some Assembly Required'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['electronica', 'electro', 'electronic', 'synthpop', 'idm']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '9'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted;electronic-we-electropop or synthpop'
                                             'bpm'  '100.7'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             '75093709'
'TALB' (Album/Movie/Show title)                     'Solvent City'
'TBPM' (BPM (beats per minute))                     '100.7'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-unsorted', 'electronic-we-electropop or synthpop']
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Some Assembly Required'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Solvent'
'TRCK' (Track number/Position in set)               '2/9'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, Fraunhofer acm, 128 kBit/s, 44,100 Hz, Stereo, HQ = off'
'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'                                   ['electronica', 'electro', 'electronic', 'synthpop', 'idm']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.01 dB'
'TXXX:replaygain_track_peak'                        '0.757006'

========================== row from database ==========================
                                              'id'  430555
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Epitonic/Solvent (4)/Solvent - Some Assembly Required.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  314
                                           'genre'  electronic-unsorted;electronic-we-electropop or synthpop
                                        'filesize'  5032623
                                           'mtime'  1620537267
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Epitonic (4) electronic unsorted;electronic we electropop or synthpop
                                      'tag_artist'  Solvent
                                     'tag_release'  Solvent City
                                       'tag_title'  Some Assembly Required
                                             'bpm'  100.7
                                    'search_title'  'assembly':2 'required':3 'some':1
                                   'search_artist'  'solvent':1
                                  'search_release'  'city':2 'solvent':1
                                     'search_rest'  '4':2,3 'electronic':4,6,8 'electropop':10 'epitonic':1 'or':11 'synthpop':12 'unsorted':5,7 'we':9
                                    'search_combo'  '4':8,9 'assembly':2A 'city':6C 'electronic':10,12,14 'electropop':16 'epitonic':7 'or':17 'required':3A 'solvent':4B,5C 'some':1A 'synthpop':18 'unsorted':11,13 'we':15
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'electro', 'electronic', 'synthpop', 'idm']
                                        'tag_date'  2001
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620537266.7421694  (2021-05-09 07:14:26)
                             'size'  5032623