Universe 23 of 30

Emerald Choir

The stars here hum in almost-harmony.

Levels: 441 to 460
Boss: Level 460
Boss rule: Meteor rain. Every 4 moves a meteor lands on a gem and turns to rock.
Detour: Five bonus levels after the boss, for two thirds of the universe's stars
Colours

The stars here hum in almost-harmony. Almost, Captain. One voice is missing from the chord.

Lumen, arriving in the Emerald Choir

More from the story (spoilers)

I isolated the missing voice. It is a frequency, and it is her ship's engine note. The Choir learned it from her.

Lumen, halfway across

The stars sing here. I think they are calling to the ones that went quiet. I hummed along. It helped more than it should.

Captain Vesper's log, on the boss

Look for a corner or a five before taking the first match you see. Power pieces pay far more than plain matches.
Meteors turn gems to rock. Clear next to a rock to break it, and keep your power pieces for the crowded rows.
Stars here count toward the detour. Replay a level for its third star when you are one short.

Play the Emerald Choir

Free to play on iPhone, iPad and Android, with optional in-app purchases.