Sentence 1: All night long he was struggling. 
 Sentence 3: Writing notes, erasing them, and re-writing again he made progress 
 Sentence 4:  Finally he was finished after months of working 
 Sentence 5:  It was a masterpiece 
 Option 1: The tune was in his head, but he just couldn't get it out. 
 Option 2: The screams were in his head, but he just couldn't get them out.