======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '166'
                                          'artist'  'Curtis Mayfield/The Impressions'
                                     'text_people'  'Curtis Mayfield'
                                         'release'  'The Anthology 1961-1977 Disc 1'
                                           'title'  "I've Been Trying"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-2', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-2', 'q-drums-4', 'q-other-2', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-3', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['soul', 'chicago soul', 'funk', 'american']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '136.092'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'The Anthology 1961-1977 Disc 1'
'TBPM' (BPM (beats per minute))                     '136.092'
'TCOM' (Composer)                                   'Curtis Mayfield'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         "I've Been Trying"
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '166240'
'TPE1' (Lead performer(s)/Soloist(s))               'The Impressions'
'TPE2' (Band/orchestra/accompaniment)               'Curtis Mayfield/The Impressions'
'TPUB' (Publisher)                                  'MCA'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soul', 'chicago soul', 'funk', 'american']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.12 dB'
'TXXX:replaygain_track_peak'                        '0.834034'

========================== row from database ==========================
                                              'id'  1510602
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/15 i_ve been trying.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  166
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  5316878
                                           'mtime'  1620572652
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 15 i_ve been trying hip hop or rnb or rap or turntablism
                                      'tag_artist'  Curtis Mayfield/The Impressions
                                     'tag_release'  The Anthology 1961-1977 Disc 1
                                       'tag_title'  I've Been Trying
                                             'bpm'  136.092
                                    'search_title'  'been':4 'i':1 'ive':3 'trying':5 've':2
                                   'search_artist'  'curtis':1 'impressions':5 'mayfield':2 'mayfieldthe':4 'the':3
                                  'search_release'  '1':7 '1961':3 '19611977':5 '1977':4 'anthology':2 'disc':6 'the':1
                                     'search_rest'  '00poprockelectronic':1 'been':9 'files':5,6 'hip':11 'hop':12 'i':7 'loose':3,4 'or':13 'rap':15 'rnb':14 'trying':10 'turntablism':16 'unsorted':2 've':8
                                    'search_combo'  '00poprockelectronic':18 '1':17C '1961':13C '19611977':15C '1977':14C 'anthology':12C 'been':4A,26 'curtis':6B 'disc':16C 'files':22,23 'hip':28 'hop':29 'i':1A,24 'impressions':10B 'ive':3A 'loose':20,21 'mayfield':7B 'mayfieldthe':9B 'or':30 'rap':32 'rnb':31 'the':8B,11C 'trying':5A,27 'turntablism':33 'unsorted':19 've':2A,25
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['soul', 'chicago soul', 'funk', 'american']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572652.4995174  (2021-05-09 17:04:12)
                             'size'  5316878