======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '369'
                                          'artist'  'Nick Drake'
                                     'text_people'  ''
                                         'release'  'Bryter Layter'
                                           'title'  'Poor Boy'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', "
 "'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-3', 'q-vocals-3', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['indie', 'acoustic', 'mellow', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '111.211'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bryter Layter'
'TBPM' (BPM (beats per minute))                     '111.211'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Poor Boy'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nick Drake'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'folk rock']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'mellow', 'folk', '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'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.59 dB'
'TXXX:replaygain_track_peak'                        '0.881234'

========================== row from database ==========================
                                              'id'  235211
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Nick Drake/Bryter Layter__MBZ;#Nick Drake;#Bryter Layter;#08;#Poor Boy.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  369
                                           'genre'  ifs-songwriter
                                        'filesize'  5914322
                                           'mtime'  1623435825
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Layter__MBZ;#Nick Drake;#Bryter Layter;#08;#Poor ifs songwriter
                                      'tag_artist'  Nick Drake
                                     'tag_release'  Bryter Layter
                                       'tag_title'  Poor Boy
                                             'bpm'  111.211
                                    'search_title'  'boy':2 'poor':1
                                   'search_artist'  'drake':2 'nick':1
                                  'search_release'  'bryter':1 'layter':2
                                     'search_rest'  '00singer':1 '08':15,18 'bryter':11,13 'drake':10,12 'eos':3 'ifs':20 'layter':4,7,14,17 'mbz':5,8 'nick':6,9 'poor':16,19 'songwriter':2
                                    'search_combo'  '00singer':7 '08':21,24 'boy':2A 'bryter':5C,17,19 'drake':4B,16,18 'eos':9 'ifs':26 'layter':6C,10,13,20,23 'mbz':11,14 'nick':3B,12,15 'poor':1A,22,25 'songwriter':8
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'mellow', 'folk', 'singer songwriter']
                                        'tag_date'  1970
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1623435824.8824558  (2021-06-11 20:23:44)
                             'size'  5914322