It is a hard act to follow, or to introduce.

The years they spent as teammates are a hard act to follow.

When he turned to sculpture, his painting was a hard act to follow.

It was quite a hard act to follow, believe me.

It's just that she had a hard act to follow.

Was 'Brothers' a hard act to follow, even five years on?

I guess you could say that song was a hard act to follow.

As a result, the fall and Christmas seasons this year will have a hard act to follow.

So Harry has always looked like a hard act to follow.

At least this team doesn't have a hard act to follow.