1.-Rocket Man (I think it´s gonna be a long time) by Sir Elton John
2.-Blowin´ in the wind by Bob Dylan
3.-Bohemian rhapsody by Queen
4.-Can´t help falling in love by Elvis Presley
5.-California girls by The Beach Boys
It´s so hard, there are so many great songs. I´d also say She´s like a rainbow by The Rolling Stones, Billie Jean by Michael Jackson, Piano man by Billy Joel, Close to you by The Carpenters, Dancing Queen by Abba...