Ice Level
by Ava Luna

From the album of the same name, their most recent.

One Fine Day
by Deanna Durbin

At age 17 in the film First Love, doing an anglicized version of "Un bel di" from Puccini's Madame Butterfly.

Young and Beautiful (orchestral version from "The Great Gatsby" soundtrack)
by Lana Del Rey

Jammed courtesy of @Venus.

Mutual Core
by Bjӧrk

Bjӧrk gives a geology lesson. The video has been nominated for a Webby award.

Lovers' Revolution
by Iron and Wine

From the just-released album, "Ghost on Ghost."

Crystal Blue Persuasion
by Tommy James & The Shondells

Probably not about about a drug but since T. J. doesn't recall exactly the genesis of the song, who knows‽