The song The River's Invitation by John Mayall is about a man who has been searching for his lost love all across the country. Despite his efforts, he has not been able to find her, and he is feeling lonely and miserable. One day, he speaks to the river, and it speaks back to him, offering to be his home if he cannot find his lady. The man is hesitant to give up his search, as he knows his love will eventually be found. However, he longs for the day when he can be reunited with her and start a life together in their home. The lyrics speak to the idea that even in the midst of heartache and loss, there is always a place to call home, whether it be in the arms of a loved one or in the comforting embrace of nature.