The best ones should be considered the summer interludes of Joe Hisaishi's mother-Kikujiro, "The Street Where the Wind Lives", "Dream of Dunhuang", "Piano Music of the Night" series, etc.
Piano:
"Kiss The Rain" (Yiruma) a
"Tears Tears" (The Daydream)
"YOUamp; ME" (The Daydream)
"Castle in the Sky" Piano Version Carrying You
"Merry Christmas" Mr. Lawrence (Sakamoto Ryuichi "Flowing City" Lin Hai
" Moonlight Frontier" Lin Hai
"Lost" Lin Hai
"The Silence of the Distant" Lin Hai
"Canon In D" Pahai Bell
"Bird Poem" piano version
Violin:
"Wanderer's Song" Sarasate
"Castle in the Sky" Joe Hisaishi
"Saylily" (a piece from "The Place Promised Beyond the Clouds")
"Ave Maria" Schubert
"Canon in D Major" P.A. Heibel
"Song of the Matador" Sarasate
"Polonaise No. 1 in D major" Wieniawski
"24 Capriccio" Paganini
"Chaconne in G minor" Vitali
Cello
"Swan" Saint-Sa?ns (The Elegant Swan) p>
"Prelude to Unaccompanied Cello Suite No. 1 in G major" Bach (very classic)
"Cello Concerto No. 9 in B flat major" Boccherini
"Sicilian Dances" Fauré (very melodic, nice song)
Clarine
"Clarinet Polka" Polish Folk Song
"Romantic" "Saint-Sa?ns (Tender)"
Trumpet
"Girl with Flaxen Hair" Debussy
"March Under the Double Eagle" Wagner (March )
"Frandore Les Demoiselles" by Bizet (more powerful)
"Planet Suite: Jupiter" by Holst (warm, but a little sad) feeling)
"Serenade" Schubert (serenade, romantic)
"Wings of Song" Mendelssohn (full of sunshine)
Flute
"Unaccompanied Flute Suite in A minor" Bach (this piece is considered to be the flute suite least like a flute suite)
"Meditation" Massenet (romantic French style)
"Peer Gynt Suite No. 1 Morning Scene" Grieg (fresh and beautiful piece)
"Albinoni Adagio" Albi Noni (sad, heavy)