Blake's Songs of Innocence (1789) and then Songs of Innocence and of Experience (1794) present their poems in a variety of different orders--there is no definitive sequence, though editors have generally opted for the one that appears in a number of late copies. At the end of each poem here, you have the option of proceeding to any of the poems Blake placed after it. You could follow a given edition throughout, or you can jump around. But first you have to begin somewhere, with the opening of copies abcdefghijklmnopqrst or tu or EJLORSVWXYZA-A or an index