======================== unified (from filesystem) ========================
                                         'bitrate'  '159.985'
                                        'duration'  '274'
                                          'artist'  'Aimee Mann'
                                     'text_people'  ''
                                         'release'  'Empire 2002+ The Hottest Soundtracks....Now!'
                                           'title'  'Save Me'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['indie', 'alternative', 'rock', 'female vocalists', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '12'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '143.416'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=196, count=0)
'TALB' (Album/Movie/Show title)                     'Empire 2002+ The Hottest Soundtracks....Now!'
'TBPM' (BPM (beats per minute))                     '143.416'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TIT2' (Title/songname/content description)         'Save Me'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Aimee Mann'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '1/12'
'TSOP' (Performer sort order)                       'Mann, Aimee'
'TXXX:ALBUMARTISTSORT'                              'Various Artists'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:added_timestamp'                              '128930990202923527'
'TXXX:first_played_timestamp'                       '128931996718430360'
'TXXX:last_played_timestamp'                        '129128719884307691'
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'rock', 'female vocalists', 'singer songwriter']
'TXXX:play_count'                                   '10'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.75 dB'
'TXXX:replaygain_track_peak'                        '0.418790'

========================== row from database ==========================
                                              'id'  1313463
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Aimee Mann-Bachelor No 2 (or, the Last Remains of the Dodo)-12-Save Me.mp3
                                         'working'  None
                                         'bitrate'  159
                                    'duration_sec'  274
                                           'genre'  ifs-songwriter
                                        'filesize'  5497516
                                           'mtime'  1637330769
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Bachelor (or, the Last Remains of the Dodo) 12 ifs songwriter
                                      'tag_artist'  Aimee Mann
                                     'tag_release'  Empire 2002+ The Hottest Soundtracks....Now!
                                       'tag_title'  Save Me
                                             'bpm'  143.416
                                    'search_title'  'me':2 'save':1
                                   'search_artist'  'aimee':1 'mann':2
                                  'search_release'  '2002':2 'empire':1 'hottest':4 'now':6 'soundtracks':5 'soundtracksnow':7 'the':3
                                     'search_rest'  '00poprockelectronic':1 'bachelor':7 'dodo':14,15 'files':5,6 'ifs':16 'last':11 'loose':3,4 'of':13 'or':8,9 'remains':12 'songwriter':17 'the':10 'unsorted':2
                                    'search_combo'  '00poprockelectronic':12 '2002':6C 'aimee':3B 'bachelor':18 'dodo':25,26 'empire':5C 'files':16,17 'hottest':8C 'ifs':27 'last':22 'loose':14,15 'mann':4B 'me':2A 'now':10C 'of':24 'or':19,20 'remains':23 'save':1A 'songwriter':28 'soundtracks':9C 'soundtracksnow':11C 'the':7C,21 'unsorted':13
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'rock', 'female vocalists', 'singer songwriter']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330768.663058  (2021-11-19 15:06:08)
                             'size'  5497516