I am looking for a selection of folksongs to complement a text. I would like to rediscover some outstanding old music from the British Isles and celtic traditions that are in the public domain. I need suggestions for the following:

1) An intersting and catchy jig or gigue to demostrate the feeling of 6/8 meter.

2) An old english reel that includes a number of rests: The idea is to still feel the beat in the absence of sound.

3) A waltz or dance tune that also serves as a love song. A song and a dance tune in one.

4) A love song that could be sung as a duet.

5) A celtic or British Isles siren song.

Many thanks for your help.