Conversation so far:
What did Lorde do in 2016?
In January 2016, Lorde ended her relationship with Lowe.
Is Lorde still working on music?
Later in 2016r, Lorde co-wrote Heartlines, a song by New Zealand music duo Broods from their album Conscious.
Did Lorde's song go high on charts?
Lorde's lead single from her second studio album Melodrama, Green Light, achieved moderate commercial success, reaching number one in New Zealand.
Did Lorde have any drama or controversy?
A political controversy occurred in December 2017 when Lorde cancelled her scheduled concert in Israel following an online campaign by Palestinian solidarity activists supporting the Boycott, Divestment and Sanctions campaign.

Question: What is Melodrama?
Self-contained rewrite: What is Melodrama by Lorde?