Before his team beat the Colorado Avalanche for the second time in less than two weeks, before it made the first installment on a three-stop trip that includes visits to San Jose and Los Angeles, Blues coach and white-haired sensei Ken Hitchcock offered perspective.

“It’s a big test because they’re all great teams,” said Hitchcock. “Every one of these teams has a great record, so it’s pick your poison. Dallas was hot, Minny was hot, Colorado. It’s just one day at a time.

“Try to play as well as you can for as long as you can. With playing every second day, and sometimes even shorter than that, you’ve got to let go of the game — good or bad. And I think we’ve done a great job of letting go. We move on to the next day, the next event.”

You’ll excuse the boys if they hold on to a 4-1 victory Wednesday for just a while. Denver has been a colossal pain for the Blues in recent years, a place where momentum comes to die. The last time the Blues were able to enjoy the long drive to the Denver airport was April 12, 2009, when they beat the Avs 1-0.

This time, they left Colorado with a five-game winning streak. They left with a 10-1-1 record in their last 12 games, the only pointless blemish being a loss at Washington. They left with a 7-2-1 road mark and the best 24-game record (18-3-3) in franchise history. They left with a 8-2-2 record against the NHL’s top 15 teams in the points standings.

And that’s to say nothing of this particular Avalanche edition, which is among the NHL’s top stories, which was looking to pay back a 7-3 tanning on Nov. 14 at Scottrade Center.

In other words, this was on a tee for the Pepsi Center Poltergeist. But the Blues came marching out with the victory.

The beginning seemed especially relevant. The Avs are 15-0-0 when they score first and the Blues are 15-1-2 under the same circumstances. The visitors struck first.

The goal came off the rush and David Backes simply deflected T.J. Oshie’s lead past goaltender Semyon Varlamov two minutes 46 seconds into the game. The goal was the 11th for Backes in the best first quarter of his career. Oshie and Jay Bouwmeester assisted and the Blues led 1-0.

Speaking of nice starts, Backes picked up his 24th point moments later by sponsoring Alexander Steen’s 20th goal. A Blues power play gained possession in the Avs’ end and worked low to Backes.

On Varlamov’s left, Backes fired across to the goaltender’s right, where the open Steen tapped in for par. Steen is just four goals short of his career high total of 24 in 2009-10. Derek Roy also for an assist and the lead swelled to 2-0 with 13:10 still to play in the first.

“To score so early in the game, and then to get a power-play and score two in the first 10 minutes like that, you like that start,’’ Backes said. “We just had to keep going.”

The Avs called timeout to regroup, which paid dividends. After Maxim Lapierre had the puck knocked from his stick into the goalmouth, Patrick Bordeleau slammed it past unaware netminder Jaroslav Halak. The difference was 2-1 with 11:36 to play in the period.

But the Blues made it 3-1 on a shorthanded goal before the period ended. Former Colorado College star Jaden Schwartz used Vladimir Sobotka to run interference before rifling a shot past Varlamov with 1:48 remaining. Schwartz’ fifth goal was unassisted, extending his career-high scoring streak to five games.

“That was a great job by Sobie, he created that whole thing,’’ Schwartz said. “He went driving the middle and backed the two defensemen off. He created the space for me and I was able to walk right in.”