You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who sang i've been thinking about you?" whose answer is Londonbeat.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who sang i've been thinking about you
Useful Output:

Doc 1: I've Been Thinking About You - Londonbeat LIVE · Comments446.
Doc 2: Londonbeat - I've Been Thinking About You (Official Video) [4K Remastered] · Comments.
Doc 3: Jimmy Helms, who sang lead on the track, had serious roots in American R&B, and you could hear it in his voice. All four members of Londonbeat
Doc 4: KLAAS & LONDONBEAT - I've been thinking about you (Klaas remix) [Official video]. 1.4M views · 6 years ago more
Doc 5: YouTube Playlist: https://www.youtube.com/playlist?list=PL-JvaRtyQDuPG6L3oAo4lBRmXFNxZMcNs "I've Been Thinking About You" is a song by