Rory Gallagher (pronounced "Ro-ree Gall-a-her") (born Liam Rory Gallagher, 2 March, 1948– died 14 June, 1995) was an Irish blues/rock guitarist. Born in Ballyshannon, County Donegal, Ireland, he grew up in Cork City in the south of the country. He is best known for his solo albums, and for his tenure in the band Taste during the late 1960s. A multi-instrumentalist who gained a reputation as a gifted and charismatic live performer, Rory Gallagher's albums have sold in excess of 30 million copies worldwide.Bullfrog Blues is a 'traditional' blues rock tune for which Gallagher is recognised as having the best version. The following are audio only. I picked them because they are the best versions I could find.
Rory Gallagher - Terrific live version
Canned Heat - Monterey '67