Honkai Star Rail 2.2 released some of the best music introduced to the game so far, and one of them is "Hope is the Thing with Feathers." This OST appears during the final battle with Harmonious Choir The Great Septimus and Sunday. The song does a fantastic job of elevating the experience of the fight, and is available as an in-game Phonograph disc. The disc can be used to play the OST in Astral Express. Here is the "Hope is the Thing with Feathers" location and how to play it in Astral Express in Honkai Star Rail.

The songs Hope is the Thing with Feathers and Sway to My Beat in Cosmos can be found together in Golden Hour of Penacony. Go to the stairs east of the Clockie statue. There should be a clockie puzzle next to the location if you haven't already completed it. Image courtesy: In-game screenshot (captured by Sanmay Chakrabarti)

Then listen to Vexed Pepeshi Guest and Lonely Intellitron Guest near the stairs. Go through the conversation, until the Mysterious Dreamchaser appears and tries to sell you Robin's latest album. He will try to sell you the song at an exorbitant price. Image courtesy: In-game screenshot (captured by Sanmay Chakrabarti)

Continue the conversation and select the "I'll trick you into the Bloodhound Family dialogue" option. Now turn around and find the Bloodhound Family member standing near the stairs. Image courtesy: In-game screenshot (captured by Sanmay Chakrabarti)