I think the answer is true
a line on a map joining points of equal height above or below sea level.
It helps you carry the tool box
As early as the Renaissance and Baroque Periods, composers have started to be freelance in music. Wolfgang Amadeus Mozart worked as a freelance composer and performer in Vienna. Joseph Haydn Haydn, also a composer, music teacher and musician made struggles as a freelancer he educated himself all throughout the process before he became well-known. Ludwig van Beethoven was also a freelance composer in Vienna.
Made (mostly) by strung instruments, such as piano and violin.
