I'm bored, the title says it all:

"Madonna" ~ "Holiday"
"Like A Virgin" ~ "Dress You Up"
"True Blue" ~ "Open Your Heart"
"You Can Dance" ~ "Spotlight"
"Who's That Girl" ~ "Causing A Commotion"
"Like A Prayer" ~ "Express Yourself"
"I'm Breathless" ~ "Vogue"
"Erotica" ~ "Theif Of Hearts"
"Bedtime Stories" ~ "Sanctuary"
"Something To Remember" ~ "You'll See"
"Evita" ~ "Don't Cry For Me Argentina"
"Ray Of Light" ~ "Frozen"
"Music" ~ "Paradise/Not For Me"
"American Life" ~ "Nothing Fails"
"Confessions On A Dancefloor" ~ "Like It Or Not"
"Hard Candy" ~ "She's Not Me" / "Heartbeat" (it's a tie lol)