I usually like all kinds of music. But the music I love mostly has some sort of guitar in it, even a lot of the hip hop songs I like have guitar somewhere. I enjoy singers but I'm more of a lyrics guy, if they can sing decently but have awesome lyrics I'll be into it. But as for technicality it doesn't matter if I feel its passionate or creative. Lyrics I usually like to be indirect, I don't really like shoved it your face lyrics where it's obvious what they're talking about.
I like piano's a lot in music as well, not really synth's or too electric piano's but like a grand piano. I also love violins and viola's in music, it's something about the tone, idk but it's great. Same with the saxophone. I also like very simple drum beats.
I don't really like catchy songs. I like catchy parts in songs, like a catchy bass line or guitar riff. But catchy repetitive vocals are just so annoying, even songs where the same chorus keeps being played over and over, really annoying. I like music to flow and move and change like a language.