Fix you by Coldplay for most recent t (but only because she picked up on a connection to it in my art), and also figure 8 by ellie Goulding...
Safe and sound by taylor swift for t before her (made me feel safe for the first time in a really long time)... and both of those t's are also associated with let you down by three days Grace... don't remember any songs associated with other t's, though I'm sure I have some because I'm obsessed with music.
Oh, and hurt by NIN for "safe & sound" t because we connected on 90's grunge music when she saw the lyrics to it in my art...