======================== unified (from filesystem) ========================
                                         'bitrate'  '185.837'
                                        'duration'  '156'
                                          'artist'  'Lykke Li'
                                     'text_people'  ''
                                         'release'  'Youth Novels'
                                           'title'  'This Trumpet in My Head'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swedish', 'indie pop', 'female vocalists', 'pop', 'electronic']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '84.245'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Youth Novels'
'TBPM' (BPM (beats per minute))                     '84.245'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'This Trumpet in My Head'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lykke Li'
'TRCK' (Track number/Position in set)               '8'
'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'                                   ['swedish', 'indie pop', 'female vocalists', 'pop', 'electronic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.06 dB'
'TXXX:replaygain_track_peak'                        '0.439006'

========================== row from database ==========================
                                              'id'  196551
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Lykke Li/08-lykke_li-this_trumpet_in_my_head.mp3
                                         'working'  None
                                         'bitrate'  185
                                    'duration_sec'  156
                                           'genre'  ifs-songwriter
                                        'filesize'  3627791
                                           'mtime'  1623435632
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 08 lykke_li this_trumpet_in_my_head ifs songwriter
                                      'tag_artist'  Lykke Li
                                     'tag_release'  Youth Novels
                                       'tag_title'  This Trumpet in My Head
                                             'bpm'  84.245
                                    'search_title'  'head':5 'in':3 'my':4 'this':1 'trumpet':2
                                   'search_artist'  'li':2 'lykke':1
                                  'search_release'  'novels':2 'youth':1
                                     'search_rest'  '00singer':1 'eos':3 'head':10 'ifs':11 'in':8 'li':5 'lykke':4 'my':9 'songwriter':2 'this':6 'trumpet':7
                                    'search_combo'  '00singer':10 'eos':12 'head':5A,19 'ifs':20 'in':3A,17 'li':7B,14 'lykke':6B,13 'my':4A,18 'novels':9C 'songwriter':11 'this':1A,15 'trumpet':2A,16 'youth':8C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['swedish', 'indie pop', 'female vocalists', 'pop', 'electronic']
                                        'tag_date'  2008
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1623435631.7443135  (2021-06-11 20:20:31)
                             'size'  3627791