Yngwie Malmsteen's "The Malmsteen Collection" was the first rock/metal album I ever bought, when I was 13. After listening to MC5's "Kick out the Jams" over the short wave radio, I went to the market to find to buy an album, as I instantly fell in love with that type of music. Since I lived in a small town, in the early 2000s, classic metal was hard to come by, so I had to go for one of the only two albums available.
I picked Malmsteen as the cover looked impressive. Some of the tracks were overwhelming for me then, but when I came over to the Spanish Castle Magic (live at Leningrad), it simply blew me away. I am been a Malmsteen and classic rock/metal lover ever since.