Parish Nandermane

Parish Nandermane is a male background Earth pony who appears in The Best Night Ever, Sweet and Elite, Inspiration Manifestation, Equestria Games, Gameloft's mobile game, and the IDW comics. He has an indigo coat, bright blue mane and tail, green eyes, and a cutie mark of a lyre. He is not named in the series, but he is named in other media.

Depiction in the series
Parish Nandermane first appears in The Best Night Ever, playing harp as part of a four-pony musical ensemble at the Grand Galloping Gala with Octavia Melody, Frederick Horseshoepin, and Beauty Brass. At Pinkie Pie's request, Parish and the rest of the ensemble play the Pony Pokey.

Parish appears briefly in Sweet and Elite at the Canterlot Garden Party, playing with Octavia, "Concerto", and "Symphony".

He reappears in Inspiration Manifestation, switch from S04E16 Unnamed Earth Stallion #3 by a cursed Rarity a during a filly's birthday party. In Equestria Games, Parish is partly seen in the stadium crowd as Spike attempts to light the Games torch.

IDW comics
On page 9, Parish Nandermane appears arguing with Octavia Melody about an upcoming gig.

My Little Pony (mobile game)
Parish Nandermane is a playable character in Gameloft's mobile game. His in-game description states, "Part of a four-pony musical ensemble, Parish Nandermane is a very talented harp player with a unique playing style. His cutie mark is a lyre."

Quotes
"This is going to scratch my gold leaf!"

"So you're allowed to complain and I'm not?"