They're open to the tactical possibilities and the musical challenges precisely because they're freed, through skill, from the need to pay attention to the low-level details of how to play.
2019年6月六级真题（第一套）听力 Section C
柯林斯高阶英汉双解学习词典释义
ADJ
(行动、计划)战术上的，策略性的
You use tactical to describe an action or plan which is intended to help someone achieve what they want in a particular situation.
Tactical weapons or forces are those which a military leader can decide for themselves to use in a battle, rather than waiting for a decision by a political leader.