Does Revelation 5:9 Suggest a Pre-Tribulation Rapture?

It is bad practice to make a doctrine on the rapture (or for that matter, any other topic) based on a single verse in the bible.

Nonetheless, we are presenting this video to you for your consideration, as you study the entire bible over the issue of the rapture.

And they sung a new song, saying, Thou art worthy to take the book, and to open the seals thereof: for thou wast slain, and hast redeemed us to God by thy blood out of every kindred, and tongue, and people, and nation (Revelation 5:9; KJV; emphasis added)