======================== unified (from filesystem) ========================
                                         'bitrate'  '128.681'
                                        'duration'  '276'
                                          'artist'  'Janne Westerlund'
                                     'text_people'  ''
                                         'release'  'Dimitri - Random'
                                           'title'  'Long Tall Grass'
                                           'quals'  ("['Q-OLDST-2', 'Q-UNU-1', 'Q-HAP-2', 'Q-JZFKS-2', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-1', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['acoustic', 'blues', 'finnish', 'folk', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '122.5'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - Random'
'TBPM' (BPM (beats per minute))                     '122.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TIT2' (Title/songname/content description)         'Long Tall Grass'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Janne Westerlund'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['acoustic', 'blues', 'finnish', 'folk', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.77 dB'
'TXXX:replaygain_track_peak'                        '0.492384'

========================== row from database ==========================
                                              'id'  1477664
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/Random/Long Tall Grass-LaRfW33PkFY.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  276
                                           'genre'  prerock-jb-blues
                                        'filesize'  4447153
                                           'mtime'  1620402881
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm LaRfW33PkFY prerock jb blues
                                      'tag_artist'  Janne Westerlund
                                     'tag_release'  Dimitri - Random
                                       'tag_title'  Long Tall Grass
                                             'bpm'  122.5
                                    'search_title'  'grass':3 'long':1 'tall':2
                                   'search_artist'  'janne':1 'westerlund':2
                                  'search_release'  'dimitri':1 'random':2
                                     'search_rest'  'blues':4 'fy':8 'jb':3 'la':5 'larfw33pkfy':1 'prerock':2 'rf':6 'w33pk':7
                                    'search_combo'  'blues':11 'dimitri':6C 'fy':15 'grass':3A 'janne':4B 'jb':10 'la':12 'larfw33pkfy':8 'long':1A 'prerock':9 'random':7C 'rf':13 'tall':2A 'w33pk':14 'westerlund':5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-2', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1']
                                      'lastfmtags'  ['acoustic', 'blues', 'finnish', 'folk', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402880.9214747  (2021-05-07 17:54:40)
                             'size'  4447153