You use the expression “A Blast from the Past” to talk fondly about someone or something that has returned after an absence or a period of disuse or obscurity.
The phrase is usually a positive or a happy one.
Example in use: ‘‘‘I heard an old Elvis tune on the radio yesterday. What an awesome blast from the past!’’’
Not surprisingly, the origin of the phrase ‘A blast from the past’ has its roots in the United States, where an unknown radio DJ coined it. The term became commonplace during the 1960s, although it might have been used before.