However, it's worth noting that there have been variations in the performance time of the national anthem over the years. In some instances, such as during sporting events or special ceremonies, singers may choose to perform only the first verse and chorus, which can shorten the overall duration to approximately 45 seconds to 1 minute.
Additionally, some singers may opt to embellish or add their own vocal flourishes to the anthem, which can lengthen the performance time beyond the average estimate. Notable renditions, like Whitney Houston's iconic performance at the 1991 Super Bowl, can extend the anthem's length to over 2 minutes.
Overall, while 1 minute and 20 seconds serves as a general guideline, the actual time taken to sing the national anthem can vary based on the preferences and style of the performer.