======================== unified (from filesystem) ========================
                                         'bitrate'  '189.453'
                                        'duration'  '235'
                                          'artist'  'Tom Waits'
                                     'text_people'  ''
                                         'release'  'Asylum Years'
                                           'title'  '(Looking For) THE HEART OF SATURDAY NIGHT'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-2', 'Q-OLDST-3', "
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 "'q-chart-4', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']"
                                     'discogstags'  "['rock', 'blues', 'lounge']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '14'
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '94.459'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Asylum Years'
'TBPM' (BPM (beats per minute))                     '94.459'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         '(Looking For) THE HEART OF SATURDAY NIGHT'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Waits'
'TRCK' (Track number/Position in set)               '2/14'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'blues', 'lounge']
'TXXX:lastfmtags'                                   ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
'TXXX:original release date'                        ['1984', '1984']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.76 dB'
'TXXX:replaygain_track_peak'                        '0.772482'

========================== row from database ==========================
                                              'id'  1250677
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Waits, Tom - Tom Waits/Asylum Years/Tom Waits - (Looking For) the Heart of Saturday Night - 02.mp3
                                         'working'  None
                                         'bitrate'  189
                                    'duration_sec'  235
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  5585959
                                           'mtime'  1639508264
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Waits, the Heart of Saturday Night 02 ifs songwriter eos
                                      'tag_artist'  Tom Waits
                                     'tag_release'  Asylum Years
                                       'tag_title'  (Looking For) THE HEART OF SATURDAY NIGHT
                                             'bpm'  94.459
                                    'search_title'  'for':3,4 'heart':6 'looking':1,2 'night':9 'of':7 'saturday':8 'the':5
                                   'search_artist'  'tom':1 'waits':2
                                  'search_release'  'asylum':1 'years':2
                                     'search_rest'  '00singer':1 'eos':3 'heart':7 'ifs':11 'night':10 'of':8 'saturday':9 'songwriter':2 'the':6 'waits':4,5
                                    'search_combo'  '00singer':14 'asylum':12C 'eos':16 'for':3A,4A 'heart':6A,20 'ifs':24 'looking':1A,2A 'night':9A,23 'of':7A,21 'saturday':8A,22 'songwriter':15 'the':5A,19 'tom':10B 'waits':11B,17,18 'years':13C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-2', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
                                        'tag_date'  1984
                                     'discogstags'  ['rock', 'blues', 'lounge']

============================== file details ==============================
                                           'mtime'  1639508264.3035998  (2021-12-14 19:57:44)
                             'size'  5585959