Answer:
gemini / gemini-2.5-flash
For the easiest web-based experience to key in a song part by part using a piano interface, **Soundtrap by Spotify** is an excellent choice. It's a collaborative, online music studio accessible directly through your web browser, meaning no software installation is required. Soundtrap offers a virtual piano keyboard that you can play with your computer's keyboard or a MIDI controller. You can easily record individual parts, layer them, and arrange your song in a user-friendly timeline. Its intuitive interface makes it simple for beginners to compose and build tracks incrementally. \n\nAnother strong contender is **BandLab**, which offers similar web-based functionality and ease of use. If you're on an Apple device (Mac, iPad, iPhone), **GarageBand** is arguably the most intuitive and powerful free software for this purpose, featuring a robust virtual piano and straightforward multi-track recording. These options prioritize accessibility and ease of composition for users of all skill levels.
openai / gpt-4o-mini
Score: 9
{"score":9,"critique":"The answer accurately presents Soundtrap and BandLab as accessible web-based options with user-friendly piano interfaces. It correctly mentions GarageBand for Apple users, noting its advantages. However, while Soundtrap allows for MIDI input, the term 'virtual piano keyboard' may be misleading if users expect a traditional piano interface. Also, the answer could briefly highlight any limitations of these platforms, such as potential cost for advanced features or "offline" limitations, for a more complete overview."}
anthropic / claude-sonnet-4-5-20250929
Score: 8.5
The answer is factually accurate and relevant. Soundtrap, BandLab, and GarageBand all exist as described and offer piano interfaces for composing music part by part. Soundtrap is indeed web-based and owned by Spotify. BandLab is also a free, web-based digital audio workstation. GarageBand is correctly identified as Apple-exclusive and free.\n\nMinor weaknesses: The answer could mention that Soundtrap has both free and paid tiers (the free version has limitations). It might also note that while these are 'easiest,' even simpler options exist like OnlineSequencer.net or MusicLab's Chrome Music Lab for absolute beginners wanting just basic piano input without full DAW features. The answer also doesn't mention that some users might find BandLab or even simpler MIDI editors easier than Soundtrap depending on their needs. Overall, the recommendations are solid and well-justified.
cohere / command-r-plus-08-2024
Score: 9.5
The answer is factually accurate and provides a comprehensive overview of accessible software options for recording and composing music part by part using a piano interface. It suggests Soundtrap by Spotify, BandLab, and GarageBand as user-friendly tools for this purpose. These recommendations are well-suited to the question's criteria, especially for beginners or those seeking a straightforward, web-based solution. The response is concise and relevant, covering the key points without unnecessary detail. A minor deduction is given for not mentioning that GarageBand is not web-based, which might be a consideration for some users, and for not providing a link or further details about Soundtrap's piano interface, which could be beneficial for readers wanting to explore this option further.
Scores are 0–10. The selected AI’s score is a self-rating.
