Crimson "Valent" Azure 
Wife of Rainbow Dash.
[@Background Pony \#3176](/images/3218600#comment_10700629)
Zipp may be the one who idolized the Wonderbolts but RD's perky drill sergeant self and love of blowing things went to Izzy.
Or maybe they're trying to set a record for how many things Izzy can blow.
-Her "Jinxie games" whistle.
-Party horns
-The dragon "charming" flute.
-This whistle.
Or maybe she's like Spitfire who loves yelling and blowing her whistle.
Zipp may be the one who idolized the Wonderbolts but RD's perky drill sergeant self and love of blowing things went to Izzy.
Or maybe they're trying to set a record for how many things Izzy can blow.
-Her "Jinxie games" whistle.
-Party horns
-The dragon "charming" flute.
-This whistle.
Or maybe she's like Spitfire who loves yelling and blowing her whistle.