======================== unified (from filesystem) ========================
                                         'bitrate'  '152.727'
                                        'duration'  '236'
                                          'artist'  'Nellie McKay'
                                     'text_people'  'Nellie McKay'
                                         'release'  'Get Away From Me'
                                           'title'  'Really'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-vocals-3', 'q-mixbeat-2', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['indie', 'piano', 'jazz', 'female vocalists', 'singer songwriter']"
                                     'discogstags'  ("['hip hop', 'jazz', 'rock', 'funk / soul', 'pop', 'folk, world, & country', "
 "'folk rock', 'pop rap', 'vocal', 'disco', 'lounge', 'big band', 'funk', "
 "'ballad']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '9'
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-pop'
                                             'bpm'  '141.118'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Get Away From Me'
'TBPM' (BPM (beats per minute))                     '141.118'
'TCMP'                                              '1'
'TCOM' (Composer)                                   'Nellie McKay'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-pop'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Really'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nellie McKay'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '9/9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['hip hop',
 'jazz',
 'rock',
 'funk / soul',
 'pop',
 'folk, world, & country',
 'folk rock',
 'pop rap',
 'vocal',
 'disco',
 'lounge',
 'big band',
 'funk',
 'ballad']
'TXXX:iTunes_CDDB_IDs'                              '9+FC0C72A1586DD73A9BF6F2CF593D8BB4+3591918'
'TXXX:lastfmtags'                                   ['indie', 'piano', 'jazz', 'female vocalists', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.95 dB'
'TXXX:replaygain_track_peak'                        '0.721145'
'TXXX:tempo'                                        '00000 BPM'

========================== row from database ==========================
                                              'id'  1110012
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Nellie McKay/2-09 Really.mp3
                                         'working'  None
                                         'bitrate'  152
                                    'duration_sec'  236
                                           'genre'  ifs-songwriter-pop
                                        'filesize'  4517203
                                           'mtime'  1620646394
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 2 09 ifs songwriter pop
                                      'tag_artist'  Nellie McKay
                                     'tag_release'  Get Away From Me
                                       'tag_title'  Really
                                             'bpm'  141.118
                                    'search_title'  'really':1
                                   'search_artist'  'kay':4 'mc':3 'mckay':2 'nellie':1
                                  'search_release'  'away':2 'from':3 'get':1 'me':4
                                     'search_rest'  '00singer':1 '2':4 'eos':3 'ifs':5 'pop':6 'songwriter':2
                                    'search_combo'  '00singer':10 '2':13 'away':7C 'eos':12 'from':8C 'get':6C 'ifs':14 'kay':5B 'mc':4B 'mckay':3B 'me':9C 'nellie':2B 'pop':15 'really':1A 'songwriter':11
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'piano', 'jazz', 'female vocalists', 'singer songwriter']
                                        'tag_date'  2004
                                     'discogstags'  ['hip hop', 'jazz', 'rock', 'funk / soul', 'pop', 'folk, world, & country', 'folk rock', 'pop rap', 'vocal', 'disco', 'lounge', 'big band', 'funk', 'ballad']

============================== file details ==============================
                                           'mtime'  1620646393.7088687  (2021-05-10 13:33:13)
                             'size'  4517203