Sonds song

The twenty-first season of the television series will start airing sometime in 2017.

Episodes
Emily in the middle

Songs

 * Set Friendship in Motion

Chararcters

 * Thomas
 * Henry
 * Gordon
 * James
 * Percy
 * Toby
 * Donald and Douglas
 * Emily
 * Rosie
 * Spencer
 * Diesel
 * Daisy
 * Dart
 * Den
 * Paxton
 * Philip
 * Stafford
 * Peter Sam
 * Rusty
 * Victor
 * Rex
 * Henrietta
 * Merlin
 * Frankie
 * Hurricane
 * Hugo
 * Terence
 * Sir Topham Hatt
 * Dowager Hatt

Duck Oliver, Flying Scotsman,, Annie, Clarabel, Toad, and birtie are also likely to appear.

Characters Introduced

 * Hannah