======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '226'
                                          'artist'  'Karen Carpenter'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'If We Try'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', "
 "'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['female vocalists', '70s', 'pop', 'mind-blowing female vocals', 'carpenters']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-squeaky'
                                             'bpm'  '89.060'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '89.060'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-squeaky'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'If We Try'
'TKEY' (Initial key)                                '11B'
'TLEN' (Length)                                     '226403'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Karen Carpenter'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['female vocalists', '70s', 'pop', 'mind-blowing female vocals', 'carpenters']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.79 dB'
'TXXX:replaygain_track_peak'                        '0.654239'

========================== row from database ==========================
                                              'id'  1300527
                                            'path'  /data/Music/Bulk/00poprockelectronic/Carpenters/Carpenters - If We Try.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  226
                                           'genre'  electronic-generic or radio-squeaky
                                        'filesize'  2717568
                                           'mtime'  1620568255
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Carpenters Carpenters electronic generic or radio squeaky
                                      'tag_artist'  Karen Carpenter
                                     'tag_release'  None
                                       'tag_title'  If We Try
                                             'bpm'  89.06
                                    'search_title'  'if':1 'try':3 'we':2
                                   'search_artist'  'carpenter':2 'karen':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'carpenters':2 'electronic':3 'generic':4 'or':5 'radio':6 'squeaky':7
                                    'search_combo'  '00poprockelectronic':6 'carpenter':5B 'carpenters':7 'electronic':8 'generic':9 'if':1A 'karen':4B 'or':10 'radio':11 'squeaky':12 'try':3A 'we':2A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'q-syn-1', 'q-chart-3', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['female vocalists', '70s', 'pop', 'mind-blowing female vocals', 'carpenters']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620568254.5035894  (2021-05-09 15:50:54)
                             'size'  2717568