Pull out all the stops
The idiom “pull out all the stops” means to do everything possible to make something successful or achieve a goal, often by using all available means or resources. The origin of this phrase comes from the organ, where the stops are the knobs that control the airflow to the pipes, allowing the organist to produce different sounds and volumes. When all the stops are pulled out, it means the organ is playing at its loudest and fullest capacity.
In everyday language, when someone says they are going to “pull out all the stops,” it indicates that they are going to make a maximum effort, use all their resources, leave no stone unturned to accomplish a task or reach a goal. It implies going above and beyond, using every available option or strategy to ensure success. For example, if someone is organizing a big event and decides to pull out all the stops, they might spare no expense, invite top performers, and promote the event extensively to ensure a high turnout and great success. In a personal context, if someone is studying for an important exam and decides to pull out all the stops, they might dedicate extra time to studying, seek help from tutors, and use all available study materials to excel in the exam.