======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '156'
                                          'artist'  'The Elgins'
                                     'text_people'  ''
                                         'release'  'Chicano Oldies 1'
                                           'title'  'Darling Baby'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', '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-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['motown', 'soul', '60s', 'northern soul', '7soul']"
                                     'discogstags'  "['funk / soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '20'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '116.386'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Cleaned by TuneUp!'
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 000015BA 00001596 0000AEEF 00009D7C 0000DC22 0001CDDC 00008000 00008000 '
 '0000028A 000001B9')
'PRIV:AverageLevel:Â&\x00\x00'                      PRIV(owner='AverageLevel', data=b'\xc2&\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Chicano Oldies 1'
'TBPM' (BPM (beats per minute))                     '116.386'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TIT2' (Title/songname/content description)         'Darling Baby'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Elgins'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/20'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'funk / soul'
'TXXX:lastfmtags'                                   ['motown', 'soul', '60s', 'northern soul', '7soul']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.08 dB'
'TXXX:replaygain_track_peak'                        '0.428854'

========================== row from database ==========================
                                              'id'  1361131
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/mary wells - darling baby.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  156
                                           'genre'  funk or soul
                                        'filesize'  2545313
                                           'mtime'  1630252319
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] mary wells darling baby funk or soul
                                      'tag_artist'  The Elgins
                                     'tag_release'  Chicano Oldies 1
                                       'tag_title'  Darling Baby
                                             'bpm'  116.386
                                    'search_title'  'baby':2 'darling':1
                                   'search_artist'  'elgins':2 'the':1
                                  'search_release'  '1':3 'chicano':1 'oldies':2
                                     'search_rest'  '00poprockelectronic':1 'baby':10 'darling':9 'files':5,6 'funk':11 'loose':3,4 'mary':7 'or':12 'soul':13 'unsorted':2 'wells':8
                                    'search_combo'  '00poprockelectronic':8 '1':7C 'baby':2A,17 'chicano':5C 'darling':1A,16 'elgins':4B 'files':12,13 'funk':18 'loose':10,11 'mary':14 'oldies':6C 'or':19 'soul':20 'the':3B 'unsorted':9 'wells':15
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['motown', 'soul', '60s', 'northern soul', '7soul']
                                        'tag_date'  
                                     'discogstags'  ['funk / soul']

============================== file details ==============================
                                           'mtime'  1630252319.140604  (2021-08-29 17:51:59)
                             'size'  2545313