The libretto , written by PERSON@1 and PERSON@2 , is based loosely on the eight paintings and engravings A Rake 's Progress -LRB- NUMBER@1 NUMBER@2 -RRB- of PERSON@3 , which PERSON@4 had seen on May NUMBER@3 , NUMBER@4 , in a LOCATION@1 exhibition .

The libretto written by PERSON@1 and PERSON@2 is based loosely on the eight paintings and engravings from the 18th century by PERSON@3 called A Rake 's Progress .
