XXa:1, is a setting of the Stabat Mater sequence, written in 1767 for soloists, mixed choir and an orchestra of oboe, strings and continuo.

Haydn divided the text into 14 movements:[1] He scored it for soprano, alto, tenor and bass soloists, mixed choir, two oboes both doubling English horn in the sections in E-flat major, strings and organ continuo.

Conductor Jonathan Green suggests adding a bassoon to double the bass line and perhaps just one player to each string part.

Haydn, like Traetta, even adapted a feature of Pergolesi's text setting, the breaking up with rests of 'dum e-mi-sit spiritum' in order to convey the last gasps of the dying Christ.

"[3] Heartz continued: "Hasse was greatly impressed with Haydn's Stabat mater, which must have seemed to him an added vindication of the Neapolitan style [of Pergolesi] that he more than anyone else had brought to flower in central Europe.