I will start by suggesting these pieces. These are just a few that now come to my mind, but I think I will add something more. I decided to divide music by genre, so as to keep a certain order. (Please keep in mind that some pieces are very long so it should be necessary to choose extracts).
"Classic" and "Modern" music:
- "Grand Fantasy on Polish Airs Op 13" by Fryderyk Chopin (extracts),
https://www.youtube.com/watch?v=Pxoi7inZTyY
- "Pastorale, Symphony Op 68 n. 6" by Ludwig van Beethoven,
https://www.youtube.com/watch?v=H0_yQQN54Gg&t=1887s
- "Variations on Là Ci Darem La Mano, Op.2" by Fryderyk Chopin (extracts) ,
https://www.youtube.com/watch?v=AnjXebgNGTI
- "Fantasy Op 49" by Fryderyk Chopin,
https://www.youtube.com/watch?v=j9PNkJ2UkL0
- "Prelude Op 28 n. 8" by Fryderyk Chopin,
https://www.youtube.com/watch?v=FXcQDxTvPOo
- "Nocturne Op. 55 n. 2" by Fryderyk Chopin,
https://www.youtube.com/watch?v=MyVFBkHepRw
- "Nocturne Op. 27 n. 2" by Fryderyk Chopin,
https://www.youtube.com/watch?v=WJ8RVjm49hE
- "Arabesque Op. 18" by Robert Schumann,
https://www.youtube.com/watch?v=bGZ_awGIr-Q
- "Slavonic Dance Op 46 n. 8" by A. Dvorak,
https://www.youtube.com/watch?v=WIywT8fKVZA
- "Three Duets for Two Violins and Piano, n. 1 Praeludium" by Dmitrj Shostakovich,
https://www.youtube.com/watch?v=eOgs90Rchyg
- "Three Duets for Two Violins and Piano, n. 1 Praeludium, orchestra version" by Dmitrj Shostakovich,
https://www.youtube.com/watch?v=RSyoUm80dAQ
- "Der Freischütz", Overture, by C.M. von Weber,
https://www.youtube.com/watch?v=txAtjngr6dE
- "Intermezzo" from Cavalleria Rusticana, by Pietro Mascagni,
https://www.youtube.com/watch?v=BIQ2D6AIys8
- "Snowstorm (Blizzard)" by Georgy Sviridov, (extracts)
https://www.youtube.com/watch?v=vSSHlWTRflk&t=1369s
- "Symphony op 13 no 1, P.I. Tchajkovskij,
https://www.youtube.com/watch?v=jzctjcHBO9k&t=595s
- "Ah, non credea mirarti" from La Sonnambula, Vincenzo Bellini,
La sonnambula: Ah, non credea mirarti
Instrumental music and Soundtracks
- "Certain Light" by Wojciech Kilar soundtrack from "Portrait of a Lady",
https://www.youtube.com/watch?v=s35ogkLisws
- "Melancholie", by Wojciech Kilar, soundtrack from Tredowata,
https://www.youtube.com/watch?v=KfnyVh7qbPA and piano version,
https://www.youtube.com/watch?v=efyT17h21JM
- "Walc" by Wojciech Kilar, soundtrack from Noce I Dnie (extracts),
https://www.youtube.com/watch?v=PWWhJR3J8Qc
- "Precz z mojch oczu" from Tredowata,
https://www.youtube.com/watch?v=WK_pgxunwpY
- "Palladio" by Karl Jenkins,
https://www.youtube.com/watch?v=f6pOLBqthd4
- "Chim-Chim-Cheree" instrumental version, from Mary Poppins,
https://www.youtube.com/watch?v=RR26_OhNi04
- "Feed the Birds", two instrumental version, from Mary Poppins,
https://www.youtube.com/watch?v=1pc6R3xauO0 and
https://www.youtube.com/watch?v=Ff8K7f6rTag
- "Love Comes Softly" soundtrack,
https://www.youtube.com/watch?v=HpQ6jSlc1E4
- "Our Love Affair", French version, soundtrack from An Affair To Remember
https://www.youtube.com/watch?v=3HnSJ-VhzXg
- "My Favorite Things", soundtrack from The Sound of Music,
https://www.youtube.com/watch?v=kwN3LJdGyuU
- "Edelweiss" soundtrack from The Sound of Music, performed by Andre Rieu,
https://www.youtube.com/watch?v=4G2F4TZTP64
- "Love Story", performed by Andre Rieu,
https://www.youtube.com/watch?v=zETWoO2mqoA
- "The Rose", performed by Andre Rieu,
https://www.youtube.com/watch?v=OysZe7fJsYE
- "We'll Meet Again" performed by Andre Rieu,
https://www.youtube.com/watch?v=wyDIaaJcOMI
- "Nearer my God to Thee", performed by Andre Rieu,
https://www.youtube.com/watch?v=upACtWVRwXY
- "The Last Rose" performed by Andre Rieu,
https://www.youtube.com/watch?v=NIOWKaLQrlM
- "I Have a Dream" performed by Andre Rieu,
https://www.youtube.com/watch?v=L1R7Kq-ieAM
- "Tennessee", soundtrack from Pearl Harbor, by Hans Zimmer,
https://www.youtube.com/watch?v=3fLl0JnAO5Q
- "Song From A Secret Garden", by Secret Garden,
https://www.youtube.com/watch?v=jR1gerSNTYk
- "Serenade" by Secret Garden,
https://www.youtube.com/watch?v=87s99PUdaGg
- "Hymn to Hope" by Secret Garden,
https://www.youtube.com/watch?v=ElBRpaNB2Ss
- "Serenade" by F. Schubert, violin played by Joshua Bell,
https://www.youtube.com/watch?v=5tnkH6qziHE
- "The Big Country", soundtrack,
https://www.youtube.com/watch?v=v8iGP29Vn3M&t=11s
- "Alfonsina y el Mar", by Ariel Ramirez,
https://www.youtube.com/watch?v=kwgZhmIvLxo
- "The Lord of the Rings" soundtrack (especially "The Shire" theme)
https://www.youtube.com/watch?v=IzQh2Lhv4vQ&t=14s
- "The Chronicles of Narnia" soundtrack
https://www.youtube.com/watch?v=E4JuVc-kty4
- "Magnificent Obsession" soundtrack,
https://www.youtube.com/watch?v=6J_ITl5RpVY
- "No Other Love" (Chopin's Etude) instrumental version,
https://www.youtube.com/watch?v=svJ2Wgw1WBY
- Charlie Chaplin
https://www.youtube.com/watch?v=ULQwYZJlRJ8 ;
https://www.youtube.com/watch?v=yDZmkOIQZvk ;
https://www.youtube.com/watch?v=9kMSG1cMWrI ;
https://www.youtube.com/watch?v=ZyAw3kDxmww ;
https://www.youtube.com/watch?v=6h9PZ7GJ9EU ;
https://www.youtube.com/watch?v=WD1MjvD6u6w ;
https://www.youtube.com/watch?v=OnK9C0m9eLE ;
https://www.youtube.com/watch?v=cuN7Hl2U28I ;
https://www.youtube.com/watch?v=567h3FU0PeQ
Various contemporary song genre
- "Miracle" by Riley Clemmons,
https://www.youtube.com/watch?v=hNjxq6rpeL8
- "The Keeper of the Stars" by Tracy Byrd,
https://www.youtube.com/watch?v=X3ZEekN2hfE ;
https://www.youtube.com/watch?v=kskZaiwvYhg
- "Maybe the Miracle" by Lizzie Morgan,
https://www.youtube.com/watch?v=Hahd0uALMws
- "An American Trilogy" by Elvis Presley,
https://www.youtube.com/watch?v=QBqHCRZReEQ
- "Mary in the Morning" by Elvis Presley,
https://www.youtube.com/watch?v=LRmUJxbkztc
- "Where No one Stands Alone" by Elvis Presley and Lisa Marie Presley,
https://www.youtube.com/watch?v=RaRaUjzD-as
- "You'll Never Walk Alone" by Elvis Presley,
https://www.youtube.com/watch?v=7NurYDwKZ9g
- "Let it be Me" by Elvis Presley,
https://www.youtube.com/watch?v=h0hVCB5LCbg
- "My Boy" by Elvis Prelsey,
https://www.youtube.com/watch?v=HOLH63c7SG0
- "Unchained Melody" by Elvis Presley,
https://www.youtube.com/watch?v=y4A_CBJiAWs
- "Red is the Rose" performed by Liam Clancy,
https://www.youtube.com/watch?v=rot9fuoqscc
- "The Autumn Leaves", performed by Doris Day,
https://www.youtube.com/watch?v=VZMD_2RZrm4
- "One More Day" by Diamond Rio,
https://www.youtube.com/watch?v=Xi8O7JdA4Sg
- "Puerto de Santa Cruz", by Horacio Guaranì,
https://www.youtube.com/watch?v=B43BGQo5tEU
- "Tres Esquinas", by Angel Vargas,
https://www.youtube.com/watch?v=D8DBtWnvKlE ;
https://www.youtube.com/watch?v=eJzLsnQhaQs
- "Zamba Para Olvidar" by Daniel Toro,
https://www.youtube.com/watch?v=u9uVI46b0BQ
- "Rasguna las Piedras" by Sui Generis,
https://www.youtube.com/watch?v=DrKRNJGAyHw
- "Aprendizaje" by Sui Generis,
https://www.youtube.com/watch?v=oi1AbEfowOs
- "Peace in the Family", by Rhett Walker,
https://www.youtube.com/watch?v=LDvOyeHQVyA
so many of the classical choices listed above!
Orawa could be interesting choice 
