print("STEP 1 - INSERT SONGS");

db.songs.insertMany([
  {
    song: "Babalik Ka Pa Ba",
    artist: "CHNDRT",
    album: "Habang Umuulan",
    released: 2018
  },
  {
    song: "Bulong",
    artist: "December Avenue",
    album: "Langit Mong Bughaw",
    released: 2019
  },
  {
    song: "Bawat Kaluluwa",
    artist: "IV of Spades",
    album: "CLAPCLAPCLAP",
    released: 2019
  },
  {
    song: "Kathang Isip",
    artist: "Ben&Ben",
    album: "Ben&Ben",
    released: 2017
  }
]);

print("STEP 2 - FIND SONGS FROM 2017 AND 2018");

db.songs.find({
  released: { $in: [2017, 2018] }
}).forEach(printjson);

print("STEP 3 - DELETE BAWAT KALULUWA");

printjson(db.songs.deleteOne({
  song: "Bawat Kaluluwa"
}));

print("STEP 4 - FIND BULONG");

db.songs.find({
  song: "Bulong"
}).forEach(printjson);