The term classic rock sort of sums up when rock groups play a generic form of rock that doesn't take chances or is less innovative than other contemporary bands of that period, although some of these groups are included because of their enormous contribution to rock music & are stil very relevent today even 30-40 years after their peak Led Zeppelin, Pink Floyd etc. therefore have a sound that is familiar to alot of ears.Personally I would prefer them to be tagged in the genre they were first associated with.I generally do not like listening to rock groups who seem to play generic music.The Classic rock tag started in the mid '70's to Album Orientated Rock that had various generic origins but all began to sound kind of similar & often played at Arena events.This musical developement along with Disco gave rise to Punk music's popularity, although Progressive Rock historically was said to be the target of Punk's objections - although alot of Prog bands also started to be less prog.

A Power ballad is a type of song typically characterized by having a slow tempo, long voiced notes, electric and/or acoustic guitars, and less emphasized percussion and bass. Some sections of the song may include strong percussion and bass that are more typical of the hard rock and heavy metal genres for increased emotional effect, and often the electric guitar comes back in the song’s climax. Common power ballad themes include (but are not limited to) emotional heartache, need, love and loss.