Mr and Mrs Finch

We bought a new bird feeder from Costco this week; it holds a LOT of seeds in four separate cylinders so I might try some different kinds of seeds in one of them. Any good ideas about something the song birds like besides sunflower seeds? 

These may be House Finches, or are these Purple Finches again? (See the extra; I think that is the purple finch)  I cannot tell the two apart, but it is fun seeing so many of them around this year. 

The Gold Finches are also plentiful this year. We are enjoying watching as they change into their breeding colors.