 Complete the following phrase:  Springsteen is, by his own admission, not a fully fluid or confident piano player. After playing piano some in concert during the early-mid 1970s, he had generally avoided it since, with the exception of a one-time benefit performance for the Christic Institute in 1990. But in the 2000s he had begun to give it a try again, a couple of times on the final leg of the 