======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '216'
                                          'artist'  "O'jays"
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'I Love Music (Part 1)'
                                           'quals'  ("['Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['soul', 'funk', 'motown', 'philly soul', '70s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '52'
                                      'tracktotal'  ''
                                            'date'  '1976'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '128.577'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1'
'TBPM' (BPM (beats per minute))                     '128.577'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1976'
'TIT2' (Title/songname/content description)         'I Love Music (Part 1)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "O'jays"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '52'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soul', 'funk', 'motown', 'philly soul', '70s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.82 dB'
'TXXX:replaygain_track_peak'                        '0.508522'

========================== row from database ==========================
                                              'id'  1506520
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1976/052 - O_Jays - I Love Music (Part 1).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  216
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  4324823
                                           'mtime'  1620385140
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1976 052 O_Jays electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  O'jays
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  I Love Music (Part 1)
                                             'bpm'  128.577
                                    'search_title'  '1':6,7 'i':1 'love':2 'music':3 'part':4,5
                                   'search_artist'  'jays':2 'o':1 'ojays':3
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1976':3 'billboard':15 'electronic':6 'generic':7 'jays':5 'o':4 'or':8 'pl':14 'radio':9 'set':11,13 'top100':2 'unsorted':10,12
                                    'search_combo'  '00poprockelectronic':17 '1':6A,7A,16C '1976':19 'billboard':11C,31 'electronic':22 'generic':23 'i':1A 'jays':9B,21 'love':2A 'music':3A 'o':8B,20 'of':15C 'ojays':10B 'or':24 'part':4A,5A 'pl':30 'pop':13C 'radio':25 'set':27,29 'singles':14C 'top':12C 'top100':18 'unsorted':26,28
                                    'tag_tracknum'  52
                                      'num_images'  0
                                             'key'  6A
                                           '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-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['soul', 'funk', 'motown', 'philly soul', '70s']
                                        'tag_date'  1976
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385140.1051395  (2021-05-07 12:59:00)
                             'size'  4324823