Barry Manilow is currently being treated in Los Angeles following "complications from emergency oral surgery".
The 'Can't Smile Without You' singer was due to perform in Highland Heights yesterday and Nashville tonight but has been forced to reschedule the dates.
A statement on his Facebook page reads: "Following a triumphant sold out concert in Memphis, Barry Manilow was rushed back to Los Angeles due to complications from emergency oral surgery that Manilow had on Monday.
"Manilow's concerts in Highland Heights scheduled for tonight (Thursday, Feb 11) and Nashville (Feb 12) are being re-scheduled with new dates to be announced shortly. Ticket holders should retain their existing tickets for redemption on the night of the new date."
The 72-year-old singer was expected to attend the Grammy Awards on February 15 but it has been called into question by his recent hospital admission.
The statement continued: "At this time it is unclear if Manilow will be able to attend the Grammy Awards on Monday, February 15th where he is nominated for his 15th Grammy Award for his latest album, 'My Dream Duets.'"
Since the statement was posted, messages have flooded in for the star, wishing him well.