Create a background image that encapsulates the essence of "Oasis Bar," located at La Trobe University, focusing on an oasis theme. The imagery should include elements like palm fronds, sand, a DJ booth, and umbrellas to convey a sense of relaxation, entertainment, and a welcoming atmosphere indicative of a lively bar setting. The design should not include any text or specific details such as the name of the bar, opening hours, or offers. The objective is to craft a visually appealing and thematic backdrop that represents the vibe of an oasis bar, leaving ample space for text to be added later according to specific needs and messages. Ensure the background is rich in detail and vibrant, creating an inviting scene that can serve as an effective foundation for a poster. The final image should allow for flexible use, with potential for customization and addition of various textual elements by users after its creation.