Final answer:
Liszt placed the piano parallel to the line of the stage in his recitals to improve visibility for the audience and create a stronger connection between the performer and the audience.
Step-by-step explanation:
Liszt placed the piano parallel to the line of the stage in his recitals to improve visibility for the audience. By positioning the piano parallel to the stage, it allowed the pianist to have a better connection with the audience, as they could see the pianist's hands and body movements more clearly. This enhanced the overall performance experience and created a stronger connection between the performer and the audience.