The sonnet has had great importance in European poetry; the relevance of the corpus for literary scholarship is guaranteed. It is a "manageable" form to treat computationally, obeying clear restrictions. Variability stays within bounds, making meaningful comparison across poems easier, regarding scansion or rhyme types. Besides, some digital collections of sonnets already exist (with different features to ours, as discussed below) as well as automatic analyses of this form. The sonnet has received attention from the computational linguistics community (Navarro-Colorado et al, 2015, 2016, 2017; Agirrezabal, 2017) including the ADSO project (Navarro-Colorado 2017). The DISCO corpus will also be useful for that audience. For these reasons, a new sonnet corpus allows us to engage in a dialogue with earlier work in traditional literary studies, in digital corpus development, and in computational poetry analyses.