======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '243'
                                          'artist'  'Milky Chance'
                                     'text_people'  'Milky Chance'
                                         'release'  'Sadnecessary'
                                           'title'  'Down By The River'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-2', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-4', 'q-other-3', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['indie', 'indie rock', 'german', 'reggae', 'singer-songwriter']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  '14'
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '114.156'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sadnecessary'
'TBPM' (BPM (beats per minute))                     '114.156'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRL' (Release time)                               '2013'
'TIT2' (Title/songname/content description)         'Down By The River'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Milky Chance'
'TPE2' (Band/orchestra/accompaniment)               'Milky Chance'
'TPE3' (Conductor/performer refinement)             'Milky Chance'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '08/14'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf52.54.0'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['indie', 'indie rock', 'german', 'reggae', 'singer-songwriter']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.52 dB'
'TXXX:replaygain_track_peak'                        '0.428660'

========================== row from database ==========================
                                              'id'  1327332
                                            'path'  /data/Music/Bulk/00poprockelectronic/set/08. Milky Chance - Down by the river.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  243
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  9727263
                                           'mtime'  1621696520
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic set 08. by the river electronic generic or radio dance
                                      'tag_artist'  Milky Chance
                                     'tag_release'  Sadnecessary
                                       'tag_title'  Down By The River
                                             'bpm'  114.156
                                    'search_title'  'by':2 'down':1 'river':4 'the':3
                                   'search_artist'  'chance':2 'milky':1
                                  'search_release'  'sadnecessary':1
                                     'search_rest'  '00poprockelectronic':1 '08':3,4 'by':5 'dance':12 'electronic':8 'generic':9 'or':10 'radio':11 'river':7 'set':2 'the':6
                                    'search_combo'  '00poprockelectronic':8 '08':10,11 'by':2A,12 'chance':6B 'dance':19 'down':1A 'electronic':15 'generic':16 'milky':5B 'or':17 'radio':18 'river':4A,14 'sadnecessary':7C 'set':9 'the':3A,13
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'indie rock', 'german', 'reggae', 'singer-songwriter']
                                        'tag_date'  2013
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1621696519.726939  (2021-05-22 17:15:19)
                             'size'  9727263