======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '282'
                                          'artist'  'Mariah Carey & Boyz II Men'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'One Sweet Day (1996)'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', "
 "'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['pop', 'rnb', 'mariah carey', 'female vocalists', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '128.495'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '128.495'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'One Sweet Day (1996)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mariah Carey & Boyz II Men'
'TRCK' (Track number/Position in set)               '0'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'rnb', 'mariah carey', 'female vocalists', 'soul']
'TXXX:other'                                        '013'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.604097'

========================== row from database ==========================
                                              'id'  1299410
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/013 - Mariah Carey & Boyz II Men - One Sweet Day (1996).mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  282
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  3960982
                                           'mtime'  1620566509
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 013 electronic generic or radio unsorted
                                      'tag_artist'  Mariah Carey & Boyz II Men
                                     'tag_release'  None
                                       'tag_title'  One Sweet Day (1996)
                                             'bpm'  128.495
                                    'search_title'  '1996':4,5 'day':3 'one':1 'sweet':2
                                   'search_artist'  'boyz':3 'carey':2 'ii':4 'mariah':1 'men':5
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '90s':2 'electronic':3 'generic':4 'or':5 'radio':6 'unsorted':7
                                    'search_combo'  '00poprockelectronic':11 '1996':4A,5A '90s':12 'boyz':8B 'carey':7B 'day':3A 'electronic':13 'generic':14 'ii':9B 'mariah':6B 'men':10B 'one':1A 'or':15 'radio':16 'sweet':2A 'unsorted':17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rnb', 'mariah carey', 'female vocalists', 'soul']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620566508.614046  (2021-05-09 15:21:48)
                             'size'  3960982