I’m not sure of your skill level, so here’s a broad list of difficulties and styles off the top of my head.
If you have a C harp, some easier tunes might be:
Piano Man by Billy Joel (1’st position)
Low Rider by War
getting a more difficult (from tough to insanely tough):
Scratch My Back by Slim Harpo
Run Around by Blues Traveler
Lollipop Mama by William Clarke
Chicken Shack Boogie by Rod Piazza
Tomorrow Night as done by Little Charlie and the Nightcats
Ain’t Goin’ Down till the Sun Comes Up by Garth Brooks
Everything’s Gonna Be Alright by Little Walter
Act Like You Love me by Jimmy Rogers (Little Walter on Harp)
It’s a great key for blues.
I’m not sure of your skill level, so here’s a broad list of difficulties and styles off the top of my head.
If you have a C harp, some easier tunes might be:
Piano Man by Billy Joel (1’st position)
Low Rider by War
getting a more difficult (from tough to insanely tough):
Scratch My Back by Slim Harpo
Run Around by Blues Traveler
Lollipop Mama by William Clarke
Chicken Shack Boogie by Rod Piazza
Tomorrow Night as done by Little Charlie and the Nightcats
Ain’t Goin’ Down till the Sun Comes Up by Garth Brooks
Everything’s Gonna Be Alright by Little Walter
Act Like You Love me by Jimmy Rogers (Little Walter on Harp)
All these tunes use a C diatonic harmonica.