There are a lot, but these are the only ones I could think of, and my reasons are only by my opinion and I could care less if you like these artist because I never tell you naman that you should hate them:
-The Jones Brothers(I used to like them so so much and they were just everywhere! Now, of course, I HATE THEM)
-Taylor Swift(I rarely find a song of hers that I really really like and God,I just don't like her. Forgive me, But I'm really on Team Kanye. Have you guys heard her new album? Sounds the same as the last ones. Kanye is always different \m/. And I don't like that she sometimes wants to get attention. Sorry Swift fans, that's the truth. And I didn't like her even more when she sang alongside Fleetwood Mac's--a band I love--Stevie Nicks in the Grammy'. Swift was terrible. She's just a pretty face)
-Regine Velasquez (Sumisigaw sya. I remember watching SOP Party Pilipinas and all the GMA artistis sang Bohemian Rhapsody. God, sumigaw sya ng GALILEO!!!!!!!!!!!!!!!)
-Miley Cyrus (Some of Her songs are, admittedly, catchy, yes, but sometimes, I wonder what she's trying to prove with trying to mature her image at that young age. And she kinda sings nasal, too. With the rate Miley's going, she'll crash soon. And a lot of her songs suck)
-Vaness Hudgens (She sucks at singing. When I saw a vid of her starring in Rent, SHE SUCKED! Some of her songs suck. Someone I know said na sinuwerte lang sya)