====== function: play ======

===== Description =====

play is a method of the MusicalEnvironment class used to start a Player, consequently triggering its action function according to the timing of its IOI function

===== Syntax =====

<code>
// where e is a MusicalEnvironment and kick is the name of a Player
e.play('kick')
</code>

===== Parameters =====

===== Return Value =====

===== Example =====