Final Answer:
Following Adams' speech, the assembly sang to the hymn or musical piece chosen for the occasion.
Step-by-step explanation:
The question lacks specific details about the hymn or musical piece, but it suggests that after John Adams' speech, there was a musical component involving the assembly singing. Historical events, particularly those involving significant speeches, often include a communal aspect where people come together through music or hymns. This shared musical experience can serve to enhance the emotional impact of the event and foster a sense of unity among the assembly.
In historical contexts, hymns or musical pieces chosen for such occasions are carefully curated to resonate with the themes of the event or to evoke certain emotions. The act of singing together can create a collective sense of purpose and identity. In the absence of specific details about the event in question, we can draw upon the general practice of incorporating music into public gatherings to enhance the overall experience and leave a lasting impression on the audience.
In summary, the assembly likely sang to a hymn or musical piece chosen to complement the themes or sentiments expressed in John Adams' speech. This practice is rooted in the tradition of using music as a powerful tool to unify and engage a group of people during significant historical or communal events.