======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '259'
                                          'artist'  'Steve Earle'
                                     'text_people'  ''
                                         'release'  'Jerusalem'
                                           'title'  'Amerika v. 6.0 (The Best We Ca'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'rock', 'alt country', 'americana', 'singer songwriter']"
                                     'discogstags'  "['rock', 'folk, world, & country', 'country rock', 'country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '123.406'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Jerusalem'
'TBPM' (BPM (beats per minute))                     '123.406'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Amerika v. 6.0 (The Best We Ca'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Steve Earle'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'folk, world, & country', 'country rock', 'country']
'TXXX:lastfmtags'                                   ['country', 'rock', 'alt country', 'americana', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.85 dB'
'TXXX:replaygain_track_peak'                        '0.531078'

========================== row from database ==========================
                                              'id'  243637
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Steve Earle/MBZ;#Steve Earle;#Jerusalem;#02;#Amerika v. 6.0 (The Best We Can Do).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  259
                                           'genre'  ifs-songwriter
                                        'filesize'  6227442
                                           'mtime'  1637330571
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos MBZ;#Steve Earle;#Jerusalem;#02;#Amerika Can Do) ifs songwriter
                                      'tag_artist'  Steve Earle
                                     'tag_release'  Jerusalem
                                       'tag_title'  Amerika v. 6.0 (The Best We Ca
                                             'bpm'  123.406
                                    'search_title'  '0':5 '6':4 '60':6 'amerika':1 'best':9 'ca':11 'the':7,8 'v':2,3 'we':10
                                   'search_artist'  'earle':2 'steve':1
                                  'search_release'  'jerusalem':1
                                     'search_rest'  '00singer':1 '02':10,14 'amerika':11,15 'can':16 'do':17,18 'earle':8,12 'eos':3 'ifs':19 'jerusalem':9,13 'mbz':4,6 'songwriter':2 'steve':5,7
                                    'search_combo'  '0':5A '00singer':15 '02':24,28 '6':4A '60':6A 'amerika':1A,25,29 'best':9A 'ca':11A 'can':30 'do':31,32 'earle':13B,22,26 'eos':17 'ifs':33 'jerusalem':14C,23,27 'mbz':18,20 'songwriter':16 'steve':12B,19,21 'the':7A,8A 'v':2A,3A 'we':10A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['country', 'rock', 'alt country', 'americana', 'singer songwriter']
                                        'tag_date'  2002
                                     'discogstags'  ['rock', 'folk, world, & country', 'country rock', 'country']

============================== file details ==============================
                                           'mtime'  1637330571.0439122  (2021-11-19 15:02:51)
                             'size'  6227442