Answer:
The given sentences on the question are following:
1.The pianist had great talent.
2.He could play Rachmaninoff blindfolded
These two sentences can be combined including a dependent clause.So, the answer of the question is given below.
*The pianist had a great talent who play Rachmaninoff blindfolded.
Explanation:The dependent clause are the kind of clause those who can not express a meaningful sentence without the help of other clause. They normally start with a subordinate conjunction. There are three kinds of dependent clause. They are:1. Adjective clause
2.Adverbial clause
3. Noun clause.
The sentence combined on our answer is a noun clause.