======================== unified (from filesystem) ========================
                                         'bitrate'  '192.004'
                                        'duration'  '249'
                                          'artist'  'Sun Kil Moon'
                                     'text_people'  'Mark Kozelek'
                                         'release'  'April'
                                           'title'  'Like The River'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'americana', 'indie rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '86.438'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'April'
'TBPM' (BPM (beats per minute))                     '86.438'
'TCOM' (Composer)                                   'Mark Kozelek'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Like The River'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Sun Kil Moon'
'TPE2' (Band/orchestra/accompaniment)               'Sun Kil Moon'
'TPUB' (Publisher)                                  'Vinyl Films'
'TRCK' (Track number/Position in set)               '9'
'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'
'TXXX:lastfmtags'                                   ['indie', 'americana', 'indie rock', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'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'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.81 dB'
'TXXX:replaygain_track_peak'                        '0.700451'

========================== row from database ==========================
                                              'id'  1273582
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Sun Kil Moon/April/sun kil moon - april - 09 like the river.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  249
                                           'genre'  ifs-songwriter
                                        'filesize'  5989991
                                           'mtime'  1628356484
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos sun kil moon april 09 like the river ifs songwriter
                                      'tag_artist'  Sun Kil Moon
                                     'tag_release'  April
                                       'tag_title'  Like The River
                                             'bpm'  86.438
                                    'search_title'  'like':1 'river':3 'the':2
                                   'search_artist'  'kil':2 'moon':3 'sun':1
                                  'search_release'  'april':1
                                     'search_rest'  '00singer':1 'april':7 'eos':3 'ifs':11 'kil':5 'like':8 'moon':6 'river':10 'songwriter':2 'sun':4 'the':9
                                    'search_combo'  '00singer':8 'april':7C,14 'eos':10 'ifs':18 'kil':5B,12 'like':1A,15 'moon':6B,13 'river':3A,17 'songwriter':9 'sun':4B,11 'the':2A,16
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'americana', 'indie rock', 'folk', 'singer songwriter']
                                        'tag_date'  2008
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1628356483.645454  (2021-08-07 19:14:43)
                             'size'  5989991