They started by playing covers of hardcore punk, punk rock and heavy metal songs. He grew up playing guitar, inspired by listening to country and punk rock music. The band has reached critical success with mainstream pop punk and alternative rock. Grunge song themes bear similarities to those addressed by punk rock musicians. It has occasionally been blended with styles such as rock and roll and punk rock. Grindcore evolved as a blend of thrash metal, thrashcore and hardcore punk. DeLonge grew to prominence playing pop punk music. He became involved in the Los Angeles punk rock scene. Alex Henderson of AllMusic considers screamo a bridge between hardcore punk and emo. They also incorporated ska, punk and reggae. Deathcore incorporates elements of death metal, hardcore punk and metalcore. A rivalry developed between adherents of the new sound and the older punk rock crowd. His music incorporates samples that are unconventional in R&B production, including punk and alternative rock. It is generally faster, harder, and more aggressive than other forms of punk rock. Farrell also left to tour with Tasty Snax, a Christian punk and ska band.