下列句子有错请改正1.Simon helped Peter repair his guitar ,for that he

下列句子有错请改正
1.Simon helped Peter repair his guitar ,for that he was very greatful.
2.I like songs to which the feeling of love is expressed.
3.I enjoy my holiday on which I went to a concert of pop music.
4.I like my music teacher for which I have great respect.
5.I have many friends of which some are musicians.
6.Peter went to a concert at whom his favourite band played and sang.