Love Hyakutaro Tsukumo music? Then you might enjoy from Hyper Duel to Devil Engine soundtracks:
Not a huge fan off it but death smiles gothic art and is probably the best one I played
Same employees started with Orca Corp., then later founded Toaplan, then that split into four developers: Takumi, Gazelle, Raizing/8ing and Cave Co. Ltd..
Then Cave caused a splinter developer Tanoshimasu to be established and develop Aka to Blue.
Thanks man. Deathsmiles is one of the best in the horizontal section of the genre. Blazing Star is another highly-rated example, which is the sequel to Pulstar.
I didn't know death smiles was a 2d scrolling shooter until I put i the game in my dad's xbox 360 I thought it was a visual novel game what possessed me to buy it the beautiful gothic art I enj9yed playing it none the less ^^
There's even a sequel and a mobile version:
Cave also did Akai Katana:
These others are also interesting: