======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '192'
                                          'artist'  'Sven Torstenson'
                                     'text_people'  ''
                                         'release'  'Sky Odyssey'
                                           'title'  'Time Pool'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-3', 'Q-OLDST-3', 'q-chart-1', 'q-drums-2', 'q-other-4', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['library music', 'electronic', 'sonne immage', 'library', 'experimental']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  'A1'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '107.26'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sky Odyssey'
'TBPM' (BPM (beats per minute))                     '107.26'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'Time Pool'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sven Torstenson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               'A1'
'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'                                  'electronic'
'TXXX:lastfmtags'                                   ['library music', 'electronic', 'sonne immage', 'library', 'experimental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.04 dB'
'TXXX:replaygain_track_peak'                        '0.603576'

========================== row from database ==========================
                                              'id'  983057
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/0electronic/[sonoton] - son 274 - sven torstenson - sky odyssey/A1 Sven Torstenson - Time Pool.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  192
                                           'genre'  electronic
                                        'filesize'  7696385
                                           'mtime'  1636912214
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 0electronic [sonoton] 274 sven torstenson sky odyssey A1 electronic
                                      'tag_artist'  Sven Torstenson
                                     'tag_release'  Sky Odyssey
                                       'tag_title'  Time Pool
                                             'bpm'  107.26
                                    'search_title'  'pool':2 'time':1
                                   'search_artist'  'sven':1 'torstenson':2
                                  'search_release'  'odyssey':2 'sky':1
                                     'search_rest'  '0electronic':1 '274':4 'a1':9 'electronic':10 'odyssey':8 'sky':7 'sonoton':2,3 'sven':5 'torstenson':6
                                    'search_combo'  '0electronic':7 '274':10 'a1':15 'electronic':16 'odyssey':6C,14 'pool':2A 'sky':5C,13 'sonoton':8,9 'sven':3B,11 'time':1A 'torstenson':4B,12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['library music', 'electronic', 'sonne immage', 'library', 'experimental']
                                        'tag_date'  1987
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636912214.0904975  (2021-11-14 18:50:14)
                             'size'  7696385