Complex sentence: After Vinayak's death in 1948, music director Ghulam Haider mentored her as a singer.Ghulam Haider introduced Mangeshkar to producer Sashadhar Mukherjee, who was working then on the movie "Shaheed" (1948), but Mukherjee dismissed Mangeshkar's voice as "too thin".
Split into simpler sentences: After Vinayak's death in 1948, music director Ghulam Haider mentored her as a singer. He introduced Mangeshkar to producer Sashadhar Mukherjee, who was working then on the movie "Shaheed" (1948), but Mukherjee dismissed Mangeshkar's voice as "too thin".