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In page The Tyger:

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The Songs of Experience was published in 1794 as a follow up to Blake's 1789 Songs of Innocence.[1] The two books were published together under the merged title Songs of Innocence and of Experience, showing the Two Contrary States of the Human Soul: the author and printer, W. Blake[1] featuring 54 plates. The illustrations are arranged differently in some copies, while a number of poems were moved from Songs of Innocence to Songs of Experience. Blake continued to print the work throughout his life.[2] Of the copies of the original collection, only 28 published during his life are known to exist, with an additional 16 published posthumously.[3] Only five of the poems from Songs of Experience appeared individually before 1839.[4]