======================== unified (from filesystem) ========================
                                         'bitrate'  '241.422'
                                        'duration'  '695'
                                          'artist'  'Polar Inertia'
                                     'text_people'  ''
                                         'release'  'N++ soundtrack'
                                           'title'  'Parallel Transport'
                                           'quals'  ("['Q-MIXBEAT-3', 'Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'Q-LOCALNESS-1', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['minimal techno', 'electronic', 'dark techno', 'techno', 'dub techno']"
                                     'discogstags'  "['techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse;soundtrack-game'
                                             'bpm'  '123.0'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'N++ soundtrack'
'TBPM' (BPM (beats per minute))                     '123.0'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-th-techno-minimal or deephouse', 'soundtrack-game']
'TDRC' (Recording time)                             '2015'
'TIT2' (Title/songname/content description)         'Parallel Transport'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Polar Inertia'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.25.101'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:compatible_brands'                            'iso6mp41'
'TXXX:discogstags'                                  ['techno', 'electronic']
'TXXX:lastfmtags'                                   ['minimal techno', 'electronic', 'dark techno', 'techno', 'dub techno']
'TXXX:major_brand'                                  'dash'
'TXXX:minor_version'                                '0'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.83 dB'
'TXXX:replaygain_track_peak'                        '0.639736'

========================== row from database ==========================
                                              'id'  856542
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/N++ OST/N++ soundtrack (OST) Polar Inertia - Parallel Transport.mp3
                                         'working'  None
                                         'bitrate'  241
                                    'duration_sec'  695
                                           'genre'  electronic-th-techno-minimal or deephouse;soundtrack-game
                                        'filesize'  21000043
                                           'mtime'  1621084947
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm OST (OST) electronic th techno minimal deephouse;soundtrack game
                                      'tag_artist'  Polar Inertia
                                     'tag_release'  N++ soundtrack
                                       'tag_title'  Parallel Transport
                                             'bpm'  123.0
                                    'search_title'  'parallel':1 'transport':2
                                   'search_artist'  'inertia':2 'polar':1
                                  'search_release'  'n':1 'soundtrack':2
                                     'search_rest'  'deephouse':7,9 'electronic':3 'game':11 'minimal':6 'ost':1,2 'soundtrack':8,10 'techno':5 'th':4
                                    'search_combo'  'deephouse':13,15 'electronic':9 'game':17 'inertia':4B 'minimal':12 'n':5C 'ost':7,8 'parallel':1A 'polar':3B 'soundtrack':6C,14,16 'techno':11 'th':10 'transport':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['minimal techno', 'electronic', 'dark techno', 'techno', 'dub techno']
                                        'tag_date'  2015
                                     'discogstags'  ['techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1621084946.8156157  (2021-05-15 15:22:26)
                             'size'  21000043