It would be a sound opportunity for our singers to perform their new albums and make their work publicly known.

publicly 是形容词 public 加上副词后缀 -ly 构成的副词形式。public 意思是"公开的、公众的"，-ly 后缀表示"以...方式"。publicly 合起来表示"公开地、公然地"，指以让公众知晓的方式进行传播或展示。