======================== unified (from filesystem) ========================
                                         'bitrate'  '68.005'
                                        'duration'  '164'
                                          'artist'  'Heli Keinonen'
                                     'text_people'  ''
                                         'release'  'Dimitri 60s 70s'
                                           'title'  'Laskettakkua brihat hebot'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-LOCALNESS-3', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-1', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['karelian', 'finnish', 'political', 'suomi', 'left wing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter;loc-eur-northern-finland'
                                             'bpm'  '143.9'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri 60s 70s'
'TBPM' (BPM (beats per minute))                     '143.9'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter', 'loc-eur-northern-finland']
'TDRC' (Recording time)                             '1967'
'TIT2' (Title/songname/content description)         'Laskettakkua brihat hebot'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Heli Keinonen'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:compatible_brands'                            'isomiso2mp41'
'TXXX:lastfmtags'                                   ['karelian', 'finnish', 'political', 'suomi', 'left wing']
'TXXX:major_brand'                                  'isom'
'TXXX:minor_version'                                '512'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.01 dB'
'TXXX:replaygain_track_peak'                        '0.891129'
'TXXX:youtube'                                      'lcjDT6INKbA'

========================== row from database ==========================
                                              'id'  1477540
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/60s70s/Heli Keinonen - Laskettakkua brihat hebot 1967-lcjDT6INKbA.mp3
                                         'working'  None
                                         'bitrate'  68
                                    'duration_sec'  164
                                           'genre'  ifs-songwriter;loc-eur-northern-finland
                                        'filesize'  1398409
                                           'mtime'  1621628552
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 60s70s 1967 lcjDT6INKbA ifs songwriter;loc eur northern finland
                                      'tag_artist'  Heli Keinonen
                                     'tag_release'  Dimitri 60s 70s
                                       'tag_title'  Laskettakkua brihat hebot
                                             'bpm'  143.9
                                    'search_title'  'brihat':2 'hebot':3 'laskettakkua':1
                                   'search_artist'  'heli':1 'keinonen':2
                                  'search_release'  '60s':2 '70s':3 'dimitri':1
                                     'search_rest'  '1967':2 '60s70s':1 'a':14 'dt6inkb':13 'eur':9 'finland':11 'ifs':4 'lcj':12 'lcjdt6inkba':3 'loc':6,8 'northern':10 'songwriter':5,7
                                    'search_combo'  '1967':10 '60s':7C '60s70s':9 '70s':8C 'a':22 'brihat':2A 'dimitri':6C 'dt6inkb':21 'eur':17 'finland':19 'hebot':3A 'heli':4B 'ifs':12 'keinonen':5B 'laskettakkua':1A 'lcj':20 'lcjdt6inkba':11 'loc':14,16 'northern':18 'songwriter':13,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1']
                                      'lastfmtags'  ['karelian', 'finnish', 'political', 'suomi', 'left wing']
                                        'tag_date'  1967
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628552.3888416  (2021-05-21 22:22:32)
                             'size'  1398409