======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '345'
                                          'artist'  'Ben Human'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Scott Air (Travelling Light Mix)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'Q-PLAY-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-4', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['electronic', 'electronica', 'breakwave radioshow', 'hotness', 'secretagent']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-samerica-brazil'
                                             'bpm'  '94.991'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '94.991'
'TCON' (Content type, a.k.a. Genre)                 'loc-samerica-brazil'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Scott Air (Travelling Light Mix)'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ben Human'
'TXXX:Mp3gain_minmax'                               '000,206'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronic', 'electronica', 'breakwave radioshow', 'hotness', 'secretagent']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.83 dB'
'TXXX:replaygain_track_peak'                        '0.537150'

========================== row from database ==========================
                                              'id'  1383937
                                            'path'  /data/Music/Bulk/0soundtrack/Negrocan - brazilectro/Ben Human - Scott Air (Travelling Light Mix).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  345
                                           'genre'  loc-samerica-brazil
                                        'filesize'  8308097
                                           'mtime'  1621630368
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Negrocan brazilectro loc samerica brazil
                                      'tag_artist'  Ben Human
                                     'tag_release'  None
                                       'tag_title'  Scott Air (Travelling Light Mix)
                                             'bpm'  94.991
                                    'search_title'  'air':2 'light':5 'mix':6,7 'scott':1 'travelling':3,4
                                   'search_artist'  'ben':1 'human':2
                                  'search_release'  
                                     'search_rest'  '0soundtrack':1 'brazil':6 'brazilectro':3 'loc':4 'negrocan':2 'samerica':5
                                    'search_combo'  '0soundtrack':10 'air':2A 'ben':8B 'brazil':15 'brazilectro':12 'human':9B 'light':5A 'loc':13 'mix':6A,7A 'negrocan':11 'samerica':14 'scott':1A 'travelling':3A,4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'electronica', 'breakwave radioshow', 'hotness', 'secretagent']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621630367.9141505  (2021-05-21 22:52:47)
                             'size'  8308097