In the following quote:
“We try not to be overly flashy when taking solos,” band leader Ricardo said. “The principles that come to mind are ‘don't blow all your cookies in the first bar’ and ‘keep it simple, smarty-pants’ — when we adhere to those concepts, we see (and hear) the benefits.”
... should the two "principles" be single-quoted (as they are above), or italicized, as below:
“We try not to be overly flashy when taking solos,” band leader Ricardo said. “The principles that come to mind are don't blow all your cookies in the first bar and keep it simple, smarty-pants — when we adhere to those concepts, we see (and hear) the benefits.”
... or ...???