Reading Beowulf would be a good starting point.
The proper definition on 'viking' is a bit tricky but Beowulf ( I recommend the Seamus Heaney translation) is certainly contemporary and set in the right region and has several reasonably detailed descriptions of feasts. Obviously it is fiction and needs to be treated with some caution as a historical source.
There are also various other sources such as the Icelandic Sagas which may be useful.
There is certainly plenty of evidence that the Nordic culture at this period had a strong oral element and as such that songs and poetry were very important.
A google search of 'Icelandic Sagas' will produce a fairly comprehensive list. again the caveat that these are romanticised poetry/fiction does apply but they are generally considered to be good sources for the period. Unless your Old Norse/Anglo Saxon is good you will need to find a translation but hard copies and e-books are widely available and not expensive.
Of particular note are the Eddas which actually make a good and surprisingly relatable read in their own right, indeed they are quoted a few times in Vikings.