(IP 
  (NP-SBJ 
    (-NONE- *pro*))
                    
  (VP 
    (VP 
      (PP-LGS 
        (P 由)
                    
        (NP 
          (NP 
            (NP 
              (NN 本地))
                    
            (QP 
              (CD 八)
                    
              (CLP 
                (M 位)))
                    
            (ADJP 
              (JJ 顶尖))
                    
            (NP 
              (NN 歌手)))
                    
          (CC 与)
                    
          (NP 
            (QP 
              (CD 七)
                    
              (CLP 
                (M 位)))
                    
            (CP 
              (WHNP-3 
                (-NONE- *OP*))
                    
              (CP 
                (IP 
                  (NP-SBJ 
                    (-NONE- *T*-3))
                    
                  (VP 
                    (VV 演奏)
                    
                    (NP-OBJ 
                      (NP-PN 
                        (NR 中国))
                    
                      (ADJP 
                        (JJ 传统))
                    
                      (NP 
                        (NN 乐器)))))
                    
                (DEC 的)))
                    
            (NP 
              (NN 演奏家)))))
                    
      (VP 
        (VV 合作)))
                    
    (PU ，)
                    
    (VP 
      (PP-MNR 
        (P 以)
                    
        (NP 
          (CP 
            (WHNP-4 
              (-NONE- *OP*))
                    
            (CP 
              (IP 
                (NP-SBJ 
                  (-NONE- *T*-4))
                    
                (VP 
                  (VA 娓娓动听)))
                    
              (DEC 的)))
                    
          (NP 
            (NN 歌乐声))))
                    
      (VP 
        (VV 庆祝)
                    
        (IP-OBJ 
          (NP-PN-SBJ 
            (NR 香港))
                    
          (VP 
            (VV 回归)))))))
arg0: 
                    *T*-4