Semi-Finals Part 1 Performances

1 Week 1, Night 1 2 Week 2, Night 1 3 Week 2, Night 2 - Part 1 4 Week 2, Night 2 - Part 2 5 Week 3, Night 1 6 Week 4, Night 1 7 Week 4, Night 2 8 Week 5, Night 1 9 Week 5, Night 2 10 Week 6, Night 1 - Part 1 11 Week 6, Night 1 - Part 2 12 Week 6, Night 2 13 Week 7, Night 1 14 Week 7, Night 2 15 Week 8, Night 1 16 Week 8, Night 2 (Results) 17 Week 9, Night 1 18 Week 9, Night 2 (Results) 19 Week 10, Night 1 20 Week 10, Night 2 (Results) 21 Week 11, Night 1 - YouTube Special 22 Week 11, Night 2 - YouTube Special (Results) 23 Episode 23 24 Episode 24 25 Semi-Finals Part 1 Performances 26 Semi-Finals Part 1 Results 27 Semi-Finals Part 2 Performances 28 Semi-Finals Part 2 Results 29 Top 10 Perform 30 Top 10 Results 31 The Finals - Top 4 Perform 32 The Finals - Top 4 Results