Applescript to shell issues using osascript

I felt like I had this somewhat under control, but I have tried everything (from the forum, to trial and error, and google) and cannot get this particular one right. I would appreciate you help!

The usual " to get this " is not working in Osascript.

This is the script I need:

tell application "System Events"
    set MyList to (name of every process)
end tell
if (MyList contains "Spotify") is true then
    tell application "Spotify" to open location "spotify:track:THIS-NEED-TO-DYNAMIC"
end if

I'm fine if I hard code everything, but I need the part that says "THIS-NEED-TO-DYNAMIC" to change as needed. Sprintf is not being my friend (and all other ways).

This feels like the closest:

In Luke's JS here: https://cycling74.com/forums/shell-problem-with-osascript-multiline It's all good (hard coded). It spits out with the line breaks (even into a message box?!), so thought I could recreate this by filling textedit using a separator, also ascii conversions to add a "return". But no luck.

Everything I try has issues. I don't understand why its not seeing my " as "

Thanks for any help!