sentences:  Sonnet 71 through Sonnet 74 group together as a sequence due to their dark, brooding tone, and the poet's obsession with his own mortality and legacy.The sequence begins in Sonnet 71 with "No longer mourn for me when I am dead" and ends with "And that is this, and this with thee remains" in Sonnet 74.Sonnet 72 is one of 126 Sonnets coined "The Fair Youth Sequence".