======================== unified (from filesystem) ========================
                                         'bitrate'  '173.879'
                                        'duration'  '172'
                                          'artist'  'Ane Brun'
                                     'text_people'  ''
                                         'release'  'Changing of the Seasons'
                                           'title'  'Linger With Pleasure'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-3']")
                                      'lastfmtags'  "['indie', 'norwegian', 'acoustic', 'female vocalists', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '143.721'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Changing of the Seasons'
'TBPM' (BPM (beats per minute))                     '143.721'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Linger With Pleasure'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ane Brun'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['indie', 'norwegian', 'acoustic', 'female vocalists', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.85 dB'
'TXXX:replaygain_track_peak'                        '0.378022'

========================== row from database ==========================
                                              'id'  198021
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Ane Brun/13-ane_brun-linger_with_pleasure.mp3
                                         'working'  None
                                         'bitrate'  173
                                    'duration_sec'  172
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  3751224
                                           'mtime'  1622657881
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 13 ane_brun linger_with_pleasure ifs songwriter eos
                                      'tag_artist'  Ane Brun
                                     'tag_release'  Changing of the Seasons
                                       'tag_title'  Linger With Pleasure
                                             'bpm'  143.721
                                    'search_title'  'linger':1 'pleasure':3 'with':2
                                   'search_artist'  'ane':1 'brun':2
                                  'search_release'  'changing':1 'of':2 'seasons':4 'the':3
                                     'search_rest'  '00singer':1 'ane':4 'brun':5 'eos':3 'ifs':9 'linger':6 'pleasure':8 'songwriter':2 'with':7
                                    'search_combo'  '00singer':10 'ane':4B,13 'brun':5B,14 'changing':6C 'eos':12 'ifs':18 'linger':1A,15 'of':7C 'pleasure':3A,17 'seasons':9C 'songwriter':11 'the':8C 'with':2A,16
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'norwegian', 'acoustic', 'female vocalists', 'singer songwriter']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622657880.8945396  (2021-06-02 20:18:00)
                             'size'  3751224