======================== unified (from filesystem) ========================
                                         'bitrate'  '248.871'
                                        'duration'  '194'
                                          'artist'  'PJ Harvey'
                                     'text_people'  ''
                                         'release'  'To Bring You My Love'
                                           'title'  'Down by the Water'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['alternative rock', 'alternative', 'rock', 'female vocalists', 'singer "
 "songwriter']")
                                     'discogstags'  "['rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '125.939'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'To Bring You My Love'
'TBPM' (BPM (beats per minute))                     '125.939'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Down by the Water'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'PJ Harvey'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'indie rock']
'TXXX:lastfmtags'                                   ['alternative rock',
 'alternative',
 'rock',
 'female vocalists',
 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.58 dB'
'TXXX:replaygain_track_peak'                        '0.867746'

========================== row from database ==========================
                                              'id'  195751
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/PJ Harvey/To Bring You My Love/MBZ;#PJ Harvey;#To Bring You My Love;#07;#Down by the Water.mp3
                                         'working'  None
                                         'bitrate'  248
                                    'duration_sec'  194
                                           'genre'  ifs-songwriter
                                        'filesize'  6055484
                                           'mtime'  1623435961
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos MBZ;#PJ Harvey;#To Love;#07;#Down ifs songwriter
                                      'tag_artist'  PJ Harvey
                                     'tag_release'  To Bring You My Love
                                       'tag_title'  Down by the Water
                                             'bpm'  125.939
                                    'search_title'  'by':2 'down':1 'the':3 'water':4
                                   'search_artist'  'harvey':2 'pj':1
                                  'search_release'  'bring':2 'love':5 'my':4 'to':1 'you':3
                                     'search_rest'  '00singer':1 '07':13,16 'down':14,17 'eos':3 'harvey':8,10 'ifs':18 'love':12,15 'mbz':4,6 'pj':5,7 'songwriter':2 'to':9,11
                                    'search_combo'  '00singer':12 '07':24,27 'bring':8C 'by':2A 'down':1A,25,28 'eos':14 'harvey':6B,19,21 'ifs':29 'love':11C,23,26 'mbz':15,17 'my':10C 'pj':5B,16,18 'songwriter':13 'the':3A 'to':7C,20,22 'water':4A 'you':9C
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'rock', 'female vocalists', 'singer songwriter']
                                        'tag_date'  1995
                                     'discogstags'  ['rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1623435960.647032  (2021-06-11 20:26:00)
                             'size'  6055484